I haven't really thought on me having this sort of anxiety, but given my past, the times I've been or felt let down, in addition to relating with your initial post, I'd say it's likely I have similar issues. :|

I do have a tendency of assuming someone will do something, or leave me/give up on me, but I just figured it was my OCD.

My mother kicked me out at 12 years old; I guess ever since then, I expect it.