Hi Fuzzy, it wasn't your failure in trusting him, it was his failure in letting you down and abusing that trust!!!
He was a T, he was supposed to be there to help you, to be understanding and supportive, right??!! So nothing wrong at all with expecting that, or with expecting that what he was doing was in your best interests.
So please, don't put any blame in yourself. Any blame lies entirely with him!!
And time to focus on your healing from this, I know it seriously isn't easy but.........you do deserve to be "free" of him
Alison
P.S. If you want a whole long list of your strengths/good qualities you only have to be checking in with us for that, right??!!