I've eaten with my therapist a number of times. You know what? It's kind of comforting. Like, for those few seconds we're just "regular" people doing something that everyone does. When I am flat, she'll pull out a piece of fruit and split it with me so we can do a "tasting" exercise. Once, when I had zero appetite and no food at home, she dragged me to the office kitchen and gave me a couple of Lean Cuisines and some homemade soup that was very yummy.

I guess I don't have a problem taking stuff from my therapist!

But those memories will always be with me. And there's nothing saying you can't pay him back in another form or fashion. If you can't afford to buy him coffee, the next time you make cookies or cake or something, wrap him up a piece. At Christmas time, give him a candy cane. It doesn't have to be a 1:1 reciprocation in terms of expense. Just something to make you feel like everything's "even".

The next time he asks if you want a coffee, say something like, "I'd love to but I left my wallet at home." This will give him the opportunity to say, "Oh, no problem. It's on me."

It's a stretch. But therapy is about stretching.