My boyfriend and I broke up a few months earlier this year, and both saw other people. He actually dated someone I knew who was friends with his sister, which is fine. We weren’t together. Now we are together and very happy. His sister’s bday party is tomorrow, and I’m just finding out about it the night before. I wasn’t invited, and I’m pretty sure she’s going to be there. Do I have a right to be upset?
I would feel some type of way about this. He should bring you anyways
Trust is everything in a relationship. If you don’t trust him, you shouldn’t be with him. She has the right to invite who she wants. And then again you can just ask him if “we are going to the party”. Or simply make plans to go out on the same night. Plan something he really likes to do.