Ooooooooh, I do love Jim/Molly in the right circumstances and this was absolutely the right circumstances. I loved this line:

He doesn't understand. It's all the same to him; perhaps it's because he hardly feels naked. In a pair of jeans, in a suit, in nothing but the skin that covers him, he feels he's hiding something, has always been hiding something, has hidden something for so long he doesn't really remember what it is, if it's anything at all.

I ALMOST feel sorry for him with that. Well done.