Isn't it amazing how that happens sometimes? I know I started talking to a marine around here in slight mutual interest of us hooking up. It took about 10 minutes of being around him in person to be completely disgusted with his personality. The vulgarity and the complete, "jerk" side of him was what reverberated right into me. He and I still had a lot of things in common, so we kept hanging out. Over the next few months I met a few of his ex girlfriends and realized just how poorly he treated women. However, somehow I found some deeper sides to him and he's now one of my best friends, even though he knows about my extra part and all that. Of course once he found out, he stopped trying to grope me randomly and stuff, but he really opened up to me then and we get together atleast once a week, we're so close that most people think we ARE together because we just randomly pounce on each other and he'll hug me when I'm cold and all that junk. I guess if we didn't know about each other's pasts, we'd really be into each other at this point.
I guess the point of that stupid long rant was just that people who send off red lights at first tend to be a bit deeper than that. First off, they're HUMAN after all. Secondly, you have to remind yourself that there's a reason you began talking in the first place.