I haven't been able to properly talk about this and its eating me alive. My boyfriend's exgirlfriend just gave birth to their kid and my mind keeps telling me he's going to leave me for her and that he doesn't really love me. I know I'm being irrational but his mom only has been talking to me about how lovely his ex is now and how the baby is and that's all anyone ever brings up to me (or that's how it seems). He's repeatedly told me he's not interested in her; he only has her back in his life for the kid but that doesn't stop my mind from telling me otherwise. I'm just so scared he's going to leave me for her because she has his kid, is prettier and is more mentally stable (so an overall better fit). Does anyone have any advice on how to feel better or stop the thoughts?