Make out buddy!

There's this guy he's a friend of a friend and whenever we go out we have an amazing time. We have this powerful attraction to each other. Problem is I'm with someone but that doesn't seem to stop us, I'd really like to dump my boyfriend and be with this other guy. Problem is that he doesn't think I'd make a good girlfriend to him if I'm making out with him while I have a boyfriend. I just need some advice, I've known this guy for years and I've always wanted more with him.

Not to be harsh, but if you act slutty, people will think you're slutty.

The guy you're making out with already has a negative opinion of what sort of girlfriend you'll make. That's not the kind of reputation you want. Break up with your boyfriend and then you're free to make out with whoever you want without being perceived as a floozy. Your actions dictate how the world sees you.