I can relate, there's still so much I'd like to know about my ex T. I asked him a bunch of questions in my last sessions and I'm glad I did, but now I still have so many things I want to ask him. Spending a few days with him sounds great to me too, it would cure a lot of curiosity I guess.

I think you're/we're curious because therapy is a one-sided. T knows so much about you while you don't get to know much about her. The longer you're with someone, the more you'd like to know about them. I find it very normal to want to get to know someone you spend so much time with.