If you're pathetic and stupid, then so am I and so are a slew of people on this forum!! No, of course you're not!!! Getting attached is completely normal, and I think your T will be touched by your letter.

Since you say you find it difficult to tell people your feelings, I think you're very brave to do that. And since T knows too, I think it will make him feel good that you were able to do that and that therapy has helped you. Of course you're nervous because you're doing that's hard for you, but you did it anyway. It's already Friday, so Tuesday is not that far away.