Something horrible happened in your life and you instinctively turned to someone you've come to trust and feel is supportive of you. And when you weren't supported, you were naturally hurt.

Let's be practical here. The reason why this hurt is because you expected (perhaps not consciously, or even with real thought) your therapist to support you outside the therapy session.

To quote Pretty Woman: Big mistake. Huge.

Although, I doubt it was really your fault. I would put money on it that your therapist, like so many others, has encouraged connection and the sort of dependence which would make turning to her in your time of need entirely natural.

I don't think therapists have any business billing themselves as support. Unless they allow the same sort of unrestricted contact a friend or family member would (which is rare for obvious reasons) they aren't support.

Sorry you were so hurt, and sorry therapists keep creating this mishmash muddle where they want to be everything for one hour a week and nothing the rest. It's a ridiculous premise, and a lot of people get hurt because of it.