I guess the first question is, what do you mean by complete trust? Is it trust that he won't abandon you, or something else (things you want to tell him)? Do you think that complete trust is necessary to achieving whatever it is you want to achieve out of therapy?

I did not trust either of mine completely - I would call it a working trust in them and that's it - but I don't think I needed to completely trust them to get something out of therapy with them. But since my basic attitude towards therapists and all medical professionals is that a little suspicion is a very good thing, our situations are probably totally different and therefore so is our need to trust in our therapists.

Also, it sounds that you are talking about more than eating disorders with this therapist. Do you want to be talking about more than that? I ask because you say you were naive to think you could just limit the therapy to eating disorders, and I can't tell on the screen if that's an expression of regret or not.

I don't know how to be able to trust a therapist again after being betrayed by one if that is what you want. It may be like after a bad relationship ends; if you start a new one, eventually you just have to take the plunge and trust the new person - or at least trust that you can survive another betrayal.