I (25f) was in an on and off again casual relationship with Jeremy (27m) for over 4 years. What I mean by that is we were never seriously dating but we were exclusive. So no sleeping with others and that wasn't because we were planning to be together at the end but to reduce the risk of STDs or pregnancies and paternity questioning.

I had met his family a few times. They liked me but I wasn't around them very much. Kinda the point of being casual and everything.

Feelings did develop near the end of our on and off again period and we broke up for real for 6 months. He told me he didn't want it to end. I wasn't sure he was serious enough about making a serious relationship work. I told him that. I was open to one but some of his actions made me doubt. Four months ago he came to me and told me he had worked on himself and he was ready to be a true partner. We talked it out and we got back together for real this time. I spent some time around his family this time and we talked about the future and our goals.

Two months into our serious relationship his ex (from before the start of our original relationship) announced she was pregnant and that the two of them had slept together while he and I were broken up for the 6 month period. He didn't deny it but he said he didn't want her. It was blowing off steam one weekend and how he was still committed to me and there would be nobody else ever because I was it for him. I told him I didn't want to be involved in a baby thing. That he was having a kid and I wasn't and I was out.

Since that point he has repeatedly tried to get me to change my mind. The mother of his child has tried to talk to me so she can yell about how unfair it is. And his family have begged me to come back, that they love me and never liked her and how he and the baby need me and they need me and they don't want to be left dealing with the actual mother and how good of a mom I would be.

I was blocking people all over the place. But in the end I lost my temper and I set up a group chat with all of them on a different number and yelled in a voice message that I am not the mother of my ex's unborn child and therefore I have nothing to do with this baby or the situation and I won't take him back, I won't have anything to do with this and if telling them all in one place needed to happen then here it was. I stayed in the group for a few hours before growing tired of the mother of the child being outraged that I would speak to her like that, where my ex was pleading and saying I couldn't dump him when he didn't cheat and his family saying how unfair I was being and how needed I was.

Now I kinda regret doing it because I wonder if they'll actually leave me alone or still look for ways to contact me and it might be more pissy than before. AITA?