Lately I have been making lots of new friends and hooking up with many of them. The problem is that I am a super nice guy who can be bad at setting boundaries. The result is that I have a few girls who are super in to me and I don't want to break their harts. Most of my game rests on being a super awesome person who can vibe with hard with anyone. Many times before/after I hook up with girls we've been facebooking/texting and they just get really attached...How can I create the expectation for fun and sex with out them getting super emotionally invested?

I don't want to be a heart breaker, but I also need to do me. Any and all advice and experience in this area/situations would be GREATLY appreciated. Thanks y'all!