25, I think it's great you found someone you enjoy spending time with that shares some interests. I worry a little about it becoming your rebound relationship where you fall hard for him, but I'm glad to hear you are cognizant of it.
As far as casual sex, just like kml said, you go home.
M:23 T:26 Me:53, Wife: 60 S:18 D:16 filed 7/16 W moved out 4/28/17