Luckily I don't even let myself like anyone unless its off of how we click or what I see of their personality. When it does happen though yeah, I have a tendency to get stupid nonverbally and another weird thing. I'll catch myself looking and have to look away when they walk in the room like 30 feet away, there's no warning time for me to just not do it - its like impulse just took over before I can filter that. Even though I don't get bad reactions I just hear that kind of thing creeps women the hell out so I do everything I can do avoid it. I'd say that I can be confident as long as I can get her to talk. That's the toughest part, women when they get into that sizing up mode all too often make it really tough, the tests go up, and part of that is the guy needing to initiate everything. I can be comfortable with a girl if we already have a good conversation going but I always feel I'm at my potentially creepiest or easiest to really misread when I'm initiating and when I can't get past initiating or am getting very little in terms of reactions out of them I tend to read their body language too literally. I guess I'd say I'm more dependent on the situation for my confidence, can't really throw down a blanket answer on that one.