to me, trust comes when I feel safe with someone....but I think I see trust in different levels. I may trust someone to do their job well/be honest, etc, I may trust someone with responsibility or with my property....but to trust someone with my heart, that is another level altogether.....because it is hard for me to feel like it's safe to open my heart or very much of it. I trust some people with some things......but I trust very few people, if any at all, with the full/deep vulnerability of my heart.
It's a long slow process for me, if it does happen, usually....someone proves over time that they consistently have regard for my thoughts and feelings and they are willing to communicate and be honest and real....
I trusted my first T that way, somehow, with the fullest depth of my heart.....she said herself in one session toward the end that she was aware I had trusted her more than I had trusted most anyone ever probably. And I did. Why did I trust her/what did that look like? I felt safe with her.....not because she was perfect and never hurt me....but because her concern and compassion seemed so deep and true and real and because I felt like she was a kindred spirit and truly understood/accepted me. Basically, I trusted her because I loved her, though.....and I have deeply loved few people, too. I cannot say I deeply love my H that way even, or trust him deeply to be careful with my heart, though he does love me, I know....
Ending up now with a deep hurt from the way T1 handled the end makes me feel like one of the fullest trusts I ever gave was betrayed.....and I feel a lot more wary trusting too deeply again. Yet I try, because I want the connection trust/love brings, so I take a deep breath and try.....