This is going to sound totally nuts and I don't think it's a normal BPD symptom. So please be nice. 

I've been out of a relationship for 2 years now. I feel lonely all the time. But I have done two things that help me.

1. Imaginary friend: I have an imaginary friend, a female, who keeps me company and stops me feeling lonely.

2. I pretend I'm somebody else : I pretend I'm someone else entirely. This could be a character from a movie /TV show, a book, a game, anything. I just pretend I'm not myself. Usually this person has a partner or a wife and I role play myself as the male, this way I feel loved and not lonely anymore.

I know this is totally nuts but it's working for me. I think it could be a new coping mechanism. Is anyone experiencing any of this or am I just crazy.