Thank you both, I am starting to understand a bit better all the parameters that need to be considered when it comes to touch.

In Europe, a hug is also more of a casual greeting than a kiss on the cheeks or holding hands. That's why it took my by surprise when my T asked to kiss me, instead of just a hug. It was definitely a father to child kiss (he is 73 and I'm 31 and of course I have my share of parental transference issues with him). Not sure if it was therapeutic per se, but it surely wasn't harmful. Nevertheless, ever since then, I secretly expect and wish for something similar to happen again.

After almost 5 years of seeing him, I still haven't done this talk with him. I am sure he has a no touch policy (except for the handshake), but he has already kissed me once, patted me on the shoulder etc. I am in a very bad place right now and keep fantasizing of sitting next to him and holding his hand (in reality I sit the furthest possible from him and rarely do any eye contact). But I know that it's hardly likely that I'll ask, and if I ask, he'll want to have the "why I need this" talk, which I cannot handle right now. Nevertheless, I think that it would be extremely helpful to let off guard and try to talk about it..