Why would you not encourage them to be a part of each other’s lives? They’re family - I don’t even understand why you’re asking this question
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definitely wrong, tf kind of question even is that. I have no full siblings, only half. 5 sisters and 3 brothers, those are my siblings and never would I throw in their face or make it a point to tell them they’re OnLy mY HaLf sIbLiNgS. that’s their family regardless and your fiancée is a damn pushover if he even lets that be an option to not let them kids in your baby’s life.
Wow are you really asking this question. I have 3 step children and this has never came to mind to keep my children from their siblings. Grow up!
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You’re messed up. They deserve to know their other siblings. As long as everything’s okay.
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Let him/her know their siblings
Unless there are genuine safety concerns, you most certainly should allow your child to spend time with siblings!
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Does this even have to be a f****** question Jesus Christ.
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I think you’re looking at this wrong. They’re siblings. There is no half. Let them get to know eachother, let them bond and become family. You’re being petty. Chill
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Y not go with your kid also so he can have a good time with his siblings it’s only fair to do at least 
Is there more to it. I mean is the other parent on drugs or violence towards the baby? If not then let the baby know thier family.
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Kinda selfish of you the kids didn’t ask to be in this situation
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Don’t be selfish, half has nothing to do with it, they are siblings period. It’s their family, not yours. How ignorant can you be!
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It’s ultimately YOUR kid not everyone else’s…if nothing else wait till your kid is older or invite the half siblings to your house if you don’t feel comfortable with the fiance’s ex.
Yes it’s wrong of you … you’re selfish
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It’s sad that people use when word 'half or ‘step’… for a sibling! They are brothers and sisters that just do not live in the same home. Let them be family and leave it at that!
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It’s not the kids fault things didn’t work out between their parents and all the kids should have every right to know their siblings
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Really? I had children with my first husband and then 2 more after our separation, the kids are brothers and sisters regardless who their parents are, all of my kids are welcome at both homes, and any siblings they have from other parents are always welcome at mine. It’s called family, if they’re my kids family, they are my family.
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It was wrong of you to have a child. Period.
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I see nothing wrong with them being in each other’s lives.
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You obviously shouldn’t have had kids with someone who already had kids. People like you are part of the issue with today’s world.
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I have siblings with one different parent. They’re my siblings regardless. The way your treating the kids is wrong. They will suffer. Growing up around eachother but forced to keep a distance because ur being super petty. Staahhhpp.
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Really? Let the kids be siblings. Yes its messed up you dont want them to see their half siblings
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I think it’s SUPER RARE for children to have both parents/sides of siblings active in their life,
Unless you have real safety concerns I think it would be amazing to give your child that chance to get to know their siblings…Kids don’t care if they are “half” they don’t even know what that means. They deserve to have each other in their lives!
My ex dated a girl WITH a child (who is not bio-logically my child’s sibling or my exes child BUT they have been raised as sisters (even though the parents have since broken up) they are still sisters and my ex is the father figure to both.
If my child’s fathers NEW gf EVER spoke about my child the way this poster has as being a “half sibling” and not “wanting her child to be exposed to mine”
I would be offended, heart broken and livid!
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I think ur wrong…they should know there siblings…
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I have half siblings and I was not in their lives for the longest time. I was pissed when I found out I could have. That is many birthdays and everything I missed. I was pissed at my parents. Ask yourself why you do dont want to? If the answer is that they are not your kids and you are selfish. If she is trying and accepting of you then why wont you accept that she is trying to make a relationship with them? I was allowed with my siblings mother by myself before we lost contact. You can be there and try to be civil, hey maybe you could actually like her! Dont put your man in an uncomfortable situation because you dont think SIBLING shouldn’t be around each other.
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Unless it’s a uniquely toxic situation (been there), there’s no reason they shouldn’t have a relationship as children and get to know each other. Assess the concerns you have: Are they valid? Are you trying to keep them apart out of pettiness or is there a deeper issue? If there’s potential for your child to be harmed or negatively impacted, that’s a call you have to make as his mother. If there isn’t and you have a bad attitude towards your fiancé’s children and the mother of his children, that could negatively impact your child in its own way. Ultimately, make a decision with good intentions and for the right reasons, otherwise it’s going to be heavily frowned upon and you could even be reprimanded for it. Technically, they have the right to know each other unless (again) it’s harmful to them in some way and from what you’ve said, it just doesn’t sound like that is the case.
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A family isn’t a half. Nor 1/4. A family is . I think not letting your child know his siblings or go to a party is totally wrong. Jmo
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Blended family, enjoy
Is your child safe with them? How old is your child. ?
From an ex step mom perspective, that woman could be your best friend. It’s natural to not like the ex, but as a grown woman, make that decision yourself. Don’t go on what your fiance & his family says about her. Get to know her yourself. Plan play dates with the kids & you & her. I missed out on a friendship with my step son’s mom during my relationship with my ex. I went on what they said about her. Now, we’re friends. I don’t live anywhere near her now, but if I did, I would be there more often. My child & one of hers are brothers. I grew up & it is our top priority for them to have a relationship, with or without their dad.
My cousin & her ex husband’s new wife are best friends. Their kids (& I mean the new wife’s kids by the ex husband) go to my cousin’s house & any future kids from my cousin & her future husband share these two homes. They are one big family. As hard as it can be at times, as easy as it is to be bitter, you have to put those things aside. Do it for your kids. At least she wants to include your children & claims them as their child’s sibling(s). Be proud. Take the initiative to possibly gain a good friend for life.
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Why deprive your child of a relationship with his siblings?
They are wanting to have a relationship with their brother… I hate the whole half term. I think that is great and shows real maturity of the ex to do so. Not only that maybe she is trying to show you she wants a amicable relationship between you and dad all together for the kids…
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Let the siblings grow up together
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If that mama is willing to look after your kid(s) and wants all the siblings to be together, then HELL yes! Let her! It takes a village. Sometimes the village is a little weird, but it is a village non the less
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Yeah, you’re the asshole.
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Let them know their siblings…don’t be a bitch about it
I respect her for being more of grown up than you.
The fact that you would even consider hiding them from their siblings is just fucked up.
If you didn’t want to share your family you should not have had children with someone who shares children with an ex.
I have a step sister and I have never referred to her as my half sister. She’s my sister!
And if anyone tried to keep her from my life I would be one mad sibling.
This is bad co parenting on your behalf, stop being selfish and let them share special moments with their siblings.
Technically I have 2 half sisters, 2 step brothers and a step sister. I can not imagine us all just not being siblings. We are close and to know someone kept me from my siblings likely wouldn’t go over well in the future. But ultimately it’s yours and your fiancé’s decision. I just think it’s incredibly selfish.
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I wouldn’t allow her to take my child on her own. I would attend with them. They are siblings. Let them build memories. They will be apart of each others lives forever. Please don’t stand in the way of that.
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Lighten up let them mix , it’s their relationship not use , no skin off your nose is it 
I have half siblings and to me I consider them full blood siblings. I would never even refer to them as half siblings they are my brothers and sisters… So I disagree with you I think that they should be in each others lives. You wouldn’t want them to someday resent you for not having them know each other.
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Yes, it’s wrong. They are siblings
I’d be pretty pissed if I wasn’t given the chance to have a relationship with my brother. I don’t call him my half brother, he’s my brother!
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You should always let the kids see each other dont be like my oldest kids brothers mother
I love my half siblings to death, let them be together.
Believe it or not…the other 2 kids are an asset and will be eventually be a support group for your child. Imagine when they’re in the same school or sports together. You’re going to want the other 2 kids to have your kids back
I know how you feel. My boyfriend has 3 other kids. And I tell myself this all the time.
You gotta be strong and mature when it comes to what’s in the best interest of your child. Trust me, it feels wrong at first but it’s in the best interest of you and your child
At the end of the day whether they are half or not they are still related and have a right to know each other. I would never forgive my dad if I didn’t see my brother and sister when we were younger. They may only be half but to me they are my family. Unless it’s due to safety reasons there should be no reason for the dad to be with ALL his children at a party. Don’t mess your child’s life up because of your selfishness. My little girl has a half sister and half brother and she loves them to bits
I think you should put your own feelings aside and do what’s in the best Interest of the child. As long as they’re not toxic or unfit, great! The more people who are in your child’s life = more people who love your child! Why deny your child or hers the opportunity to grow up with their sibling?
If you really love this man than you need to love all of him and that includes his children. By you calling her his baby mamma you are already making yourself sound extremely immature and by not wanting to create a positive relationship between all of you and the fact that she is trying and you are not. What does that say about your character? Those children need to have a positive family environment by all parents and sounds like one still has some growing up to do.
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I wouldn’t allow it but I don’t like the other side of the family so
Half siblings are siblings none the less. As are step siblings.
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I’ll say it depends, how’s your relationship with her? With her kids? Also how old is your child? No one take my kids and they are 6 and 11
This post infuriates me 
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Every child should know there family… Unless there are concerns for your babies safety…family is family and we all need family…
Opposite sides here. Had my son at 17 we both moved on. He had 5 more kids with a women if it wasn’t for ME pushing at first (she did get on board quick) our kids wouldn’t have the bond they do and KNOW they are siblings. Not half not nothing they are just siblings.
Until very recently we did every Christmas and every birthday as a unit. We were all very close
Until some personal stuff started happening with the mother and father.
NEVER PUNISH KIDS. You choose this person KNOWING he had kids. Why would you not want the kids in your husbands life, your life and your child’s life.
Don’t be with someone and have more kids with them if you can’t love the ones that are already there(goes for man or women) let’s hope you’re not the “baby mama” one day in this situation where someone’s trying to take your kids out of the picture.
They are his siblings… I never had the opportunity to grow up with my 3 half sisters and I hate it!!!
Tbf it is wrong of you not to want your kid to be around its siblings! The only reason I can think of as to why you’d be so petty is possible jealousy? For her to want this it shows she is trying to do the decent thing… For you to try and stop it seems very bitter
What the fuck is wrong with you.??? Let those kids see their siblings. Dont be a witch.
Why deny your child their siblings? Children do not choose the circumstances they are born into, it is up to the adults in the situation to be mature and foster the best environment they can for them. If you do keep your child from the rest of their family, you will pay for it one day. Real life example, my cousin’s mother told him that no one on his dad’s side wanted anything to do with him, all while hiding all the gifts being sent to him. She would pocket any money and send back all other gifts. My cousin ran away at 16, and it wasn’t until years later his brother found him. He now only talks to his dad’s family, and spoke to his mother once to get her side if the story and has had no contact with her since. That could be what your future would look like if you insist on separating them.
Its thuer siblings regardless yes what is wrong with you… And this is a serious question.
Yes it is wrong of you. Unless she’s violent or has a history with CPS, than the siblings should grow up together. That’s called co-parenting and is the right thing to do. It really has nothing to do with you and your feelings. It should always be about the children and developing strong family ties.
You will regret, with all your heart, attempting to interfere with your child’s relationship with their siblings! When your child is old enough to make their own choices, you may be the one left out on Christmases and Thanksgivings when it is you they don’t want to have around, because YOU are the odd man out.
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This has to be a joke… nobody is this stupid.
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Never keep siblings apart, be it half or step just because of your own grudges.
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I have a 4 year old daughter her father is not in the picture. My husband has been in her life since day one I would never tell my daughter that her sister is her half sister. I also have 2 siblings who have different dads then me and my brother. Never once I have I called them my half siblings. I also have 4 step brothers who i look at as just my brothers. There is no step or half siblings in my book. They are siblings and I would never feel any other way. I wouldnt be who I am today if I didnt have all of them in my life. Co-parenting also means including the other children that are in each parents life.
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Of course you should let them meet thier siblings
Why wouldn’t you? Honestly, they deserve to know each other. It would be selfish to not let them. What is your reasoning for not wanting to do this?
You sound like such an awesome person to be around. 
Those poor kids…
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You are gross. That’s coming from someone who never had my sibling around because of someone like you.
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If you can’t except his children do them ALL a favor and just leave. What kind of horrible person even has logic like this? 
My step son has a brother and sister in moms side and we have a daughter… she claims the other sister as her sister. As they have gotten older they have gotten closer… unless its a danger take them to party and enjoy yourself. . In my family there is no step or half
Um… you don’t want baby in their siblings lives? YES YOU ARE WRONG. How would you feel if she didn’t want her children to be around your baby simply bc it’s your baby? I wouldn’t let her take baby by herself at all. If baby is invited, so are you. But I think it’s very sweet that she wants to include your son and allow them that time to bond. I have two older children from a previous marriage and if my husband were to tell me he didn’t want our son to be in their lives, I would leave him no questions asked. I don’t know how your fiancé is handling that but I’d be flipping all over you for that.
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You don’t want your baby to grow up and say “mama didn’t let me see my brothers/sisters”. That could be a big issue when they get older. I’d let them see each other. They are family whether you like it or not.
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Really???
How old are you ??
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This is petty and sounds kind of bitter and selfish
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You just sound like a snob. You don’t love that man if you can’t love ALL of him his children included!
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I hate the “half siblings” things.
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Uh what? You’re wanting to keep your child away from their siblings? Maybe not so much just let your baby go off alone to the party but maybe go in attendance with your fiancé.
Do NOT keep your child away from their siblings. You’re being selfish.
Grow up and foster a good family relationship for the sake of all the kids.
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All my siblings are my half sibling but their still my siblings were family. Those kids share a father they are family weather you like it or not.
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WoW your a tad messed up in jealousy . Yes they should know each other ! 
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Wow!! I can’t believe how horrible and judgey you are all being. She is asking for opinions not crucifixion! We don’t know anything about the other mother and how she lives her life or what the kids are like. Yes, take you child and see id everything works out. Just because they are siblings doesn’t mean their environment is something you want your child exposed to.
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You’re being petty. If you don’t want her taking your kid than you do it. And unless your fiance is a jerk he won’t appreciate you alienating his other children. And that will eventually cause a huge problem with you.
I have my youngest daughters half sister all the time. I would NEVER keep them apart it would only hurt her. As far as my older daughter she keeps in touch with her siblings from her dad (he has many) they live out of state or she would see them as well.
They are siblings whether you like it or not. I think it’s lovely that she extended the invite and wants to include your child. Really speaks volumes about the type of person she is.
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Is she doing a give and take or just take.
If you truely love your man and your kid you’d let the siblings bond despite how you feel… Nothing bad is going to come out of them bonding… Nothing but great will come out it 
… Don’t be so insecure and pathetic it only pushes them away
Those are his fucking siblings!!! Half or not…those children deserve to know one another. You are a shit mom if that’s your logic…
Absolutely wrong. They arent HALF SIBLINGS… THEY ARE SIBLINGS. AND you should honestly grow up and understand that. Family isn’t always full blood. They are related. Go.and let them.have fun
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As a mom of 2 girls that have two older half siblings that weren’t asked about things like this… let the baby go. That’s your child’s siblings whether you like it or not. Those are your fiancés children, and since you’re planning to marry then those are also children you should treat as your own. I’m a stepchild and have a wonderful bonus mom. You don’t treat your bonus children as anything less than your own blood children. Period. Get over the issues with his ex and move forward for your child’s sake. They need to know one another!
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Maybe not let her take them but for you to deprive your child of a relationship with its siblings would be wrong. You should be encouraging your fiance to spend the time with HIS children from BOTH of you. Just because it didn’t work out for them as a couple doesn’t mean they shouldn’t be a United front and co parent successfully! Those children didn’t choose their parents so grow up put your big girl panties on help your fiance be the best parent he can be to ALL of his children and be an exceptional momma/step mom to those children and let them have a relationship!
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Why would you want to keep them apart? Are you jealous of his ex because she also has kids by him? Are you afraid he will go back to her? Do not keep the children apart
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We have custody of my sons half siblings, and they go to church every Sunday with their moms mom (their grandma) and she also takes my son. As well as baby sits for me when I need. My son loves his half siblings to death as do I my own half siblings I couldn’t imagine my mom keeping me from my half siblings or me keeping my son from his. I think your child will resent you when he/she gets older. Don’t teach your child that behavior just because you may have a problem with your child’s fathers new child’s mother. I guess it all depends on the situation cause I would never allow my sons fathers ex wife to take my child, but that’s for reasons that I know she is unsuitable to watch him. Hints why we have custody of my sons half siblings. It’s a personal decision on letting him go over there, but letting them interact and be apart of each other’s lives is a “should be”
They are still his siblings wtf
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Why are you going to punish your child? Those are your FIANCES kids and YOUR childs half siblings… I mean seriously? I wouldnt let her ‘take’ my child, but id have no issue with taking them to the party myself.
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Well they are siblings. Why deny your child more love in his life? As parents we have to remember it’s not about us. Put the jealousy and insecurities aside forever and let those kids be siblings. If you’re uncomfortable at first then let her know you’ll be happy to come with the baby. Bring a gift. Be an adult.
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Expose him? You make it sound like his siblings are some form of virus. You should be so fortunate to have a good baby momma to deal with who doesn’t want to keep the kids from him just because he moved on. My boyfriend has a 4 year old to a previous relationship & we have a 3 month old together: nothing makes me happier then seeing them together. I fell in love with his son as much as i did him. If YOU don’t love his kids & accept them; then you should of never got in the relationship!
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All depends on the environment the age of your child if she is asking for you to be their as well or if she is trying to taking your child without you depends on a lot of factors it’s your choice
Wow, really!? My brother is technically a half sibling but in our family we see he’s my brother as well my oldest daughter has 2 brothers her dad had with his new wife, and she brought 2 girls to the family and they are my daughters sisters so why you feel they have to labled as insignificant because they are half siblings your making your child miss a potentially wonderful relationship with siblings. I wouldn’t trade my older sister or younger brother for anything
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Your baby has the right to know his siblings, 1/2 sibling or not. My adopted children have other siblings and I make a point for them to see each other a couple times a year.