I'm not new here, but I couldn't remember my information. I hope that's ok.
I posted a while back about being in an on/off relationship with someone with bpd.
We were able to work things out and stay together...until now. He kinda unofficially moved in with myself and my family and everything had been great for a few months. I'm pregnant with a little boy due in May. My partner has been acting different but no more than usual until just the other day. He's suddenly become highly paranoid about people being invisible in the house, not ghosts but actual people. I've had a feeling for a while that we may have a spirit of some sort in the house and expressed that to him but it's more than that to him. I won't go into the other things but to make a long story short he came to me the other night and told me that we were broken up because he can't deal with worrying about what I'm doing on top of everything else. He thinks I'm cheating on him with whomever this invisible being is. He says that whenever I move in the bed that it's me having sex with it.
I've never been more confused and concerned. He is still here but I'm not sure how much longer he'll be here. He says the only reason he's here is because he has no where else to go.
I have no idea what to do.
Honestly this sounds a bit like schizophrenia by your description. My mother suffers from this disorder. She sees things that aren't there. Accuses her husband of cheating on her. She called me and told me that there are 2 of me and she saw the other one in her house. I'd suggest you try to seek a doctor. If it gets worse he could harm you unintentionally. Usually it can be controlled with medication. Like BPD, sometimes it can be triggered so to speak by an event or a stress. If you can recall some kind of emotional event that has trauma or stress involved, that might have been the start of it. I'm by no means a professional. I can just identify a lot of the same characteristics with events happening back to my childhood. Recently I was talking to a counselor who believes that is why I was drawn to my current wife with BPD. The similarities are there and is unhealthy because I was putting up with stuff a lot of other people would run away from because I'm numb to it or it's normal to me.