I'm in pretty much the same predicament. I isolate myself because that's what I've always done. On top of BP and everything else I'm an extreme introvert. My marriage ended because of BP and I have no one to talk to that understands or really even cares that much. The few friends I had bailed when I went inpatient and diagnosed because they think I'm "crazy" now.

I was in a relationship for about 3 months after the divorce, she was so judgmental and firm in her idea about how "her man" should behave that I had to bail because she caused way more stress than I could handle.

I pretty much sit in my room, by myself, and stress over everything. I'm lonely but unwilling to try the whole relationship thing again, even if I could find someone who was interested.