Friends With Benefits

so... I've been friends with benefits with this guy for about a year now. we hook up on and off but it seems to only be on his terms when he feels like it. he tells his friends about me but he doesn't have my number saved or anything. we use to hangout but not anymore unless we are hooking up. Is this fling just getting old..should I end it? worst part is I think I have feelings for him and he's your typical asshole muscle head. help.