Aren't they lovely?

Let me explain.

I think I got so used to dealing with people leaving me, that I grew to expect it at every turn. Now, everytime my boyfriend says he needs to talk to me or doesn't call or something like that, my internal thoughts go straight to "He hates me" "hes breaking up with me" "he doesnt want to be with me" and I end up winding myself up only to find out that it was NOT the case and everything is fine.

Its getting really, really old. I can and do give him space and I don't react badly towards him, I am able to control myself and not allow myself to be clingy or whiney or the such, but the darned thoughts are really a pain in the you know what.

How to get rid of these darn thoughts? Or at least relax and assume the best until i know for sure its not good news?