I had a similar experience with a---honestly not sure what to call him. Accidental boyfriend? Haphazard paramour? Rebound guy? We saw each other for several months right after I left college, but we weren't emotionally close, and I didn't want to be. But the sex was freeing because I honestly didn't care what he thought. I'll always be grateful to him for giving me the chance to see how much more fun sex is when you just say exactly what you're thinking.