So i've known this girl (few years older) for about a month. really cool, attractive, but she has a boyfriend (she can do alot better). well over the weekend we hooked up and told me that she likes me. I'm in a dilemma. I realize she has a bf and that its fucked up, but hey whatever. So i'm torn to pursue because in the back of my mind, once a cheater always a cheater right? Or to pursue it cautiously and see where it goes.