I can relate. I find it scary to develop a dependence/attachment to someone. It is hard to trust people when other people have walked out of your life which destroyed your ability to trust. One can only regain their ability to trust through time and healing.
I find that I sometimes don't trust my boss. I've noticed that this makes him uncomfortable sometimes. I hate that my strange inability to trust authority figures interferes with my work. But, I still connect my relationship with my step-father with my relationships with authority figures. As for my T, she is still new. So I haven't built a high level of trust in her yet. I hope I don't fail to trust my T due to my past relationship with my step-father.