I just want to keep this one

So I've been hanging out a lot with a guy i met last month and he's what i look for in a guy. He's hurt from his last relationship ( became fiancee's, miscarried twin boys, she leaves him for his best friend who he's known since the 3rd grade) and i want to make sure he ends up happy eventually. He asked me out and after two weeks said that he couldn't handle a relationship at the moment and that he still loves his ex ( during the two weeks I've stayed armt his house and had sex quite a bit) and now he's asking for nudes. What in the world do i do with him because i care deeply for him but i know he doesn't want to be anything significant to me right now. Any input?