Depends on how long you were together IMO
I would not go if I didn’t want to!
Yuck… On the sisters part 
no way would I want my sister’s leftovers.
#1, absofuckinglutely NO i wouldn’t attend that wedding…. You will feel like they are laughing to your face & you’ll lose your marbles…
#2, ABSOFUCKINGLUTELY not attend a wedding that your CLOSEST FRIEND is having with someone that you had (and possibly still have lingering) of…
I wouldn’t be going 
I wouldn’t go to the wedding
I think it’s a tad bit strange. personally I wouldn’t but to each their own… 
I wouldn’t go it’s like pouring salt on a wound.
I would not go lol 
just send a card that says “enjoy the sloppy seconds”
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Also…everyone, is someone elses ex.
Showing your face there and being over the top excited for them would make my day! I would fake pretend to be so excited for them and NEVER let them know you give two shits. I’d be on the front row clapping. I’m that girl. Lol
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I wouldn’t go. F that. So much disrespect.
Would you rather have him if you knew he wa Ted her. Did you BIG favor.
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Dont let a scumbag ruin you and your sisters relationship
My petty ass is over here like
Tracy Gabrielle Lopez Pajes
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That’s uncomfortable
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Maya Johnson answer this 
Nopeee I would not be going
I wouldn’t go either that’s just messy
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Careese Helene what the what
I would have whooped her ass
Heck naw you don’t own them nothing
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Do what you want to do.
No!! I absolutely feel you & I would definitely NOT want to go at all!!! That’s shady IMO
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Fuck no I wouldn’t want to go!
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Read what you said out loud… Then ask yourself would it hurt more or less to go 
I know a girl who had a one night stand with her sisters ex boyfriend of 3 years. They got pregnant and it was a whole ordeal. He took her to court and got custody of the baby. Somehow they ended up together despite all that drama. They got engaged and even had a other baby. The relationship didn’t last long and wasn’t born out of love, rather convenience. Now the dad has custody of both girls and the two sisters get along well enough I suppose but it’ll always tarnish their relationship I feel. It was already askew but, more so after that. I couldn’t imagine…
You and your sister have a long way to go, and there will likely be a lot of awkwardness but, if they are happy together then you might have to accept the fact that they are together and either choose to be apart of your niece/nephews lives or take a step back…
Me personally, I wouldn’t want to have anything to do with them, but I would of course always love my nieces/nephews. Such a hard situation.
This sounds made up lol
Act cool
Go all out there
Looking Million $$$ and show him
He married the wrong sister
If you’re upset, can you trust yourself to go and can you trust them to accept you. There is so much information that could cause issue and no issue at all. Apparently you are still injured by them being together, can you deal with seeing it happen. Do what you think is right for all involved love, only you and you alone can make this decision. If you do go, have a backup plan for leaving and a friend waiting in the wings for support. You never know if you were only meant to bring them together and you never know what can bring you to your greatest love either.
Even family can be toxic this includes being traitors and backstabbers. You don’t have to associate yourself with ANYONE who could do that to you. Take care of yourself mentally and emotionally before caring how they’re gonna feel about it. And honestly if it was me I’d have to cut ties. Family or not. I had a family member do this to me while I was on and off with my ex that I had been with for years and we have a child together. I cut ties with her and couldn’t really care either way. She’s now reaping what she sowed. 
Geez i don’t even know what to say… This sounds Crazy!! That’s no kind of sister in my opinion!!
Depends on the relationship you have with your sister. This could be ‘shes a skanky trash ho’ situation or a ‘she has a good heart but happened to fall for my ex’ situation. Either way, let that anger go bc hes def not your forever person and thats okay
They have two kids together so they’ve been together a while. I know how much that betrayal must have hurt you. You can choose not to go and make the chasm between you and your sister bigger, or you can think down the line that maybe you’ll also have children one day and might want your children to be close. The only way to do that is to repair the relationship with your sister. NOT EASY. You don’t have to be best friends right now. You can start slow. If you decide to attend the wedding, you can just wish them health and happiness and leave it at that - you don’t need to socialize with them. You can see how it goes little by little and see what happens.
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I say go and have a good time with family and friends. Just make sure that your wedding date just happens to be one of her exes who she had deep feelings for at one time or another. 
As strange as it is to say, some people are completely oblivious on how someone can feel and they don’t understand it until they experience something similar. It would be interesting though if you also found love with one of her exes, married him, and had kids.
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You don’t need to go, it’s your choice but personally I think you maybe should have addressed this with her before two kids and a wedding? Idk it’s weird that you’re contemplating not going unless you haven’t talked to them since it happened
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But after they’ve had kids and now getting married. You can’t be all up in your feelings not. You have 2 choices. Accept it. Or disown your sister and nieces/nephews. Pick wisely.
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If the roles were reversed… you would want her to support you. I realize that what happened hurt and you still feel the sting of that today, but sometimes we have to realize that life moves on and there are always better things in the future.
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My sister stole 20k+ thousand and half of a business we started together. Haven’t spoken to her in 3+ years….family ain’t shit.
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I absolutely would NOT go. Just because she’s your sister does not mean she can blatantly disrespect you. Of course your feelings would be hurt and out of all the people in the world why go after an ex of a friend or family member? All that “they’re still your family” is such a toxic way of saying you have to accept their shitty behavior because you share a bloodline. No ma’am, not me, not today.
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I can understand why your upset, in my opinion sisters shouldn’t do that, she still is your sister and you have two Nieces/ Nephews, were you broke up before them two got together? If you were try to let it go ,they have had to been together for awhile to have two kids together ,go to the wedding and wish them well. If he cheated on you with her me personally wouldn’t go, I’m sure your not the only one who has thought it was wrong for them to get together.
Nope, I’d stay as far away from that drama as possible. If you are still this upset by her betrayal then you don’t need to go to the wedding and probably should stay away from them in general. I would have a very hard time trusting my sister again if she betrayed me like yours did to you.
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Life is too short to be wasting time on anything or anyone I wouldn’t go I wouldn’t be able to stop laughing looking at him know the things we did I know where his mouth Been n my sick sister marrying him lmfao 
sorry but that would be funny to me
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I feel like you should have gotten over it with the one kid, now they got two and getting married? Move on with your life . If you don’t want to go then don’t go, but seriously how many years has it been if they also got two kids??? Move on.
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That just sounds disgusting to me ! She is not your sister ! Sisters dont do that shit !!
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Go support your sister. You broke up. I assume it didn’t happen yesterday so why does it matter? Move on. Your sister is an adult who doesn’t really owe you her happiness.
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A lot of people are saying get over it, but honestly, your feelings are VALID. There are billions of people in the world and your sister went after your ex. That’s slimy, really. It’s bad enough when your friends go after your ex, but your sister? Nah. 
Now that they have kids together, that is kinda different - I’m sure you want to be there for the kids. As much as you don’t like it, I’d try to move past it as much as possible just so it’s not awkward drama at family functions, and so that you can be there for your nieces/nephews. But still, your feelings are valid. Take your time and choose if it’s worth it or not for you to move past it. I think it is, but I still don’t think the situation is right.
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this is something that should have been addressed when she very first started dating you ex. If you said you didn’t care even though you did you have no one to blame but yourself and I say go to the wedding. If you told them both that you did not approve then I say stay home. Either way it’s your choice though. If you go for the love of all things holy please don’t make a scene!
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He is your X go to there wedding enjoy the day,you have nieces or nephew’s surely you are over the hurt now.did she go with him whilst you were with him? Or are you just jealous he loves her and could not love you in the same way.Have a great day,
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Damn. I wouldn’t go. She didn’t respect u, by dating someone u loved…why do the same? It’s one day, and family screws ppl the worse. I would talk to the niece and nephew, explain to their ability of understanding…u wont attend. But not having to do with anything with them. That’s insane…love urself!
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I’d forgive her but I’d never forget and a trust between us would forever be broken. I’d Never date the X of a family member or friend.
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Do not go ! She so wrong marrying a man that was once her brother in law just go for a vacation and wish them well.
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Part of me says no don’t go the other half says go to support your sister no matter what.
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Nothing like your nieces and nephews. Go support your sister. One day yall might need each other. Obviously you and the guy didnt work out and its been atless 2 years if shes had 2 kids unless she had twins.
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Be supportive. You should be happy for them. Your true love will come. There’s a reason he’s an “ex”.
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I remembered one of my sisters dating a guy. One day, they broke up and she was heartbroken. I wanted to help her; so, I went to talk to him. When we met, he told me that the only reason he was dating my sister, was to be close to me. That was the last time I saw him.
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Apparently you didn’t want him so if your sister does let it go and get on with your life and remember blood is thicker than water
I wouldn’t be able to bring myself to do it. I don’t see how a sister could do that either. Sorry you’re going through that.
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Agree wish them all the happiness an move on girl if u guys broke up there was a reason for it your mr right will come along
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There are a lot of insensitive bitches in this comment section. You’re completely entitled to the way you feel so I just say do what you feel is right. If you dont want to go, then you dont have to.
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I’d wish them happiness in a lovely card and book a spa weekend for myself on their wedding date.
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You do what is best for YOU!! It isn’t about anyone else, it’s about what you need!!!
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Support your sister he’s not your mister. Point being she’s family. Maybe he becomes family maybe he doesn’t either way pain makes us grow and we don’t own others.
Do you have children together as well?
I mean I wouldn’t even know what to do on a situation like that.
If you don’t have children together, move on with you’re life. Find someone else, I wouldn’t want to ever be back with someone who could go off with you’re sister.
I’d be fuming if I was you’re mother, that a man could do that to you and you’re sister.
Don’t let a man rip you’re family apart.
It’s hard to give comments without knowing the full details of the story but however I know the feeling of being betrayed it is really not so easy to move on after years. If your sister is not the reason why you broke up with your ex then I suggest you go and show up. If your ex and ur sister betrayed you, you have all the reasons not to show up. People would understand you… praying for you girl!
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Okay I see where you are coming from but if they have two kids together and if he didnt cheat on you with your sister this didnt happen yesterday so its been awhile and she should be happen for at least your sister and should go support her and to be their for you niece/ nieces or niece/nephew or nephew’s idk witch but you should want to be in their lives and if you don’t go what are you teaching them you should always be there for your siblings
A person cannot “steal” someone from you.
Did she flirt or did he just gravitate to her.???
If he truly wanted YOU he would have stayed with You.
If HE loved You then 2 children would not have been conceived. He would not be about to marry HER.
You cannot be angry with anybody. It is what happens in life.
So what if you would have married him. Seems to me a divorce would happen between you.
Get over it. What is done is done. Your Mr Right just May be at the wedding reception.
Go. Wish them happiness. Love your niece/nephews, whichever they are.
Don’t have unnecessary grief and ruin your own life over spilt milk.
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Your feelings are valid. I would not go. . However we wouldn’t even be on speaking terms for me to be invited either because I would have probably done some shit to her face.
Has the sister made any effort
Does she already know your upset
I personally wouldn’t go but that’s just me
Guess it depends on how long ago you was with this guy an for how long. She should feel wierd about herself forsure tho! I couldnt or wouldnt do something like that to anyone I so called loved. Shoot I’m disgusted just find out if someone I’m with or been has ever been with one of my friends ever! I’ve also been lied to by a so called best friend an bf about then two ever being together then I found the old messages in his messenger cuz he never deleted anything even from years ago an he she to keep all womens naked pictures he has ever been with in his phone an I didnt know till his children told me about so it made me check.
Everyone has a person. Obviously he wasn’t yours. You should go to the wedding and thank her for taking him off your hands. That just means your one step closer to finding YOUR person. Try looking at the situation from a more positive perspective.
He’s an ex for a reason. She probably needs the support!
You are not obligated to keep someone in your life because they are your sister. It really comes down to you. Do you want to forgive and move on? Do you want to risk her doing something like that to you again? It’s absolutely up to you but don’t feel you have to accept something just because it’s your family. And no one should judge you for either decision.
I’m sorry but my sisters would never do that to me but it seems to become more common these days.
Personally only you can make that decision on weather you should go or not . But your feelings are valid … and you have every right to feel the way that you do . That’s a big betrayal from a sister . Your not supposed to cross that line . For me I don’t think if my sister did something like that I’d be heart broken 
mad hurt . I would want to even look at her Face ID be disgusted . But to me I’m wondering if you still might have feelings for the guy in some way maybe . Idk not much to get from this post . Or maybe your not completely over him yet . So it’s making the sting even worse . For you . Because that’s a big betrayal yes very big one . It doesn’t sound to me this is like some normal ex that your completely over . I’m just saying betrayal like that is bad . But I think 
if you were completely over him and didn’t have like a deep love for him it’s possible you could be able to get over it 
slowly. But since they already have two kids . It sounds like they’ve been together for awhile . And your not getting over it . So it seems to me that there’s more than just your sisters betrayal going on . Take time and sort your feelings. Maybe you need to get over him first . Before you may ever be able to make immense with your sister . Good luck 
sorry your sister betrayed you like that . That’s the worst .
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My last ex, before I met my husband and I were broken up for at least 2 years before I met him. My husband and I have been together for 15 years. I would still be p-od if he were to be with any of my sisters or close friends. He was my first REAL true love. And even though I’ve been married for 12 years and he’s been married for much longer, I still feel that hurt when we ended things. I was stupid and broke up with him, and he gave me an ultimatum. Make up my mind, right then and there, or he was moving on. I didn’t think he would do it, but he did. I was 16 or 17 at the time. So, young and dumb and didn’t know what I wanted. I still get upset when my sister tells me she’s talked to him (mainly because she just does it to rub it in my face) but, anyway. My point. I don’t blame you for being upset. BUT have you talked to her about it? Does she know you feel this way? They have 2 kids, and if it’s something you have come to terms with before they decided to get married, I’d just say let them be. I wouldn’t go to the wedding though. It would be too hard for me even if they’ve been together this long.
I’ve been in a similar situation but mine was with my daughters dad. Inbox me if u wanna chat I no what it feels like 
They’ve obviously been together for quite some time given they have two kids together… I feel like your time has passed to take a stand for your feelings and unhappiness of them being together.
He’ll no sick who dose that to there sister sad I could never cross that line
If it hurts to see them together I wouldn’t go to the wedding it’s only gunna make u worse 
I think on that day treat yourself to a spa day and go treat yourself do something to take your mind off it hun x
Obviously, he’s moved on. Don’t hold grudges, it only hurts you.
Have u found someone and moved on with your life? I would say yes go and continue on with your life.
It was your ex for a reason get over it… support your sister stop the jealousy
She is your sister. You should go to the wedding.
Absolutely not!!! Sisters don’t do that. I wouldn’t be able to go
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You broke up for a reason. Support them and move on so you can find your perfect person too
I mean COVID is still going around so, I wouldn’t go for my own safety
Nearly everyone has an ex.
Why can’t you let him go?
If you think you can handle it but GOD has someone so special for you
I feel like you do what ever makes you happy. Its not your job to make others happy.
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Wish them well…if it was that strong you would have broken up!
She literally can’t find someone else?! Anyone else in the world?! She sounds lazy
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ID be like “F” him and be there for my sister. As others would say, be the bigger person.
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Let it go and be happy. Yourself and for them
I’d say y’all broke up for a reason. Anyone can date whoever they choose. I feel maybe she should have asked before getting together or anything but really I think if you’ve moved on, and you love your sister and niece/nephews then you should go. Maybe chat with her and tell her that you wish she would have asked if you were okay with it before they got together but you still love her and support her.
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I’m petty. If i would of went to the wedding i know damn right i would fuck that shit up for both. I’d bring a bat. Thats breaking girl code and sister code.
Get over it he’s your ex
Very disrespectful… I wouldn’t go
Ann Peterson… Lol Cut out Sister and ADD MOM!!! 