You know you are talking yourself into all this worry and panic, right?

I know you're dealing with a disorder, and that's why you feel how you do.

Right now, this girl is your friend. Try to just relax about that.

Everybody will disappoint you in some way eventually. That really can't be helped. But, hopefully, they don't disappoint in such a deeply hurtful way that it crosses the line.

You have to have 'a line'. A measure of what disappointment is ok and what is not.

For example: Lots of times plans fall through. It's usually ok, and the plans are followed through again later. No big deal.

But sometimes, the disappointment is too much, like say a person ends up stealing something from you. Then, you get rid of the friend.

So, it's a balance of trust and keeping your guard up.