I don't know if it has anything to do with BPD, but I really hope someone can help me or give me some insights.
In every friendship, I devote myself completely to that person. They're usually the only one for me, but of course they'll have other friends and other people to care about. This gives me some issues - I get immensely jealous and I have a hard time pretending I'm not. I'm jealous of their other friends and tend to hate them without knowing them. I feel easily threatened in my relationships or otherwise and it makes me act out in ways I don't really want to.
It's tiring and draining to feel so jealous and threatened all the time. I'm constantly worried my friend will pick someone else over me, convinced that every minute they spend with them rather than me is proof that I'm not good enough for them and they want to get rid of me. That makes me panic and act out to get their attention, but it rarely ends well. I feel this constant need to be someone else's number one as they are mine, and it's as if I mean nothing to them if I'm not their number one.
I tried the approach of getting to know those other friends, but that doesn't help. I also tried making other friends, but I can't commit to more than one person on that level. There's one person, and they mean the world to me, and it leaves no place for anyone else no matter how hard I try.
I don't want to be jealous. I don't want to feel that way, and I don't want to give my friend the feeling that they're doing something wrong when it's my fault. I don't want to lose them because of it.
I know you guys can't fix this, but maybe you've got some advice on how to deal with it?