Relationships

What does it mean when someone continues to talk about the same experience that they put you through?

Im in a poly relationship and my boyfriend got the other girl pregnant but then made her have an abortion at the beginning my boyfriend wouldn't even stop by to see me or to even kick it then when he got the other girl pregnant he start it looking for me hanging out etc then he made her get an abortion and she became even more annoying and clingier than she was already before she says she is not controlling but she is because ever since she had the abortion she is even more around him even though she was already controlling him at the beginning by not letting him come and see me she always saying it was him making the decisions but that's not true because when we first talked about us being in a poly relationship he was excited and happy and he loved the idea he was so eager until she start it killing that excitement for him, and now i only see him once a week sometimes i don't even want to see them at all. She didn't care about what she put le through today she posted a meme about a baby and how he would get excited and it lead to a baby they both don't know that to me that is a trauma because i been through it before where this motherfucker had another baby by another female and i was in love with him and i love this man so to me its a trauma. But i don't think they know. And i don't know if i should tell them both that to me when she brings up a baby its a trauma for me.
What does it mean when someone continues to talk about the same experience that they put you through?
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