All of my ex gfs, and my female friends have told me that they find me very attractive. Though, I've a very soft-spoken and quiet person. I'm not the loud and obnoxious attention-wh0re type of guy, so I usually don't get as much attention as other guys; or so I think.
I was out with a group of female friends last night, and they kept telling me that girls we didn't know were checking me out, and that those girls were "obviously" interested in me.
I looked over, and I couldn't see what the hell they were talking about. I mean, they were just casually looking around the room, and happened to coincidentally look over at me a couple of times. When I asked my female friends to explain the difference between (girls just looking around the room) and (girls interested in me) were, they couldn't.
So I'm wondering:
How the hell am I supposed to know that a girl is interested in me, as opposed to just looking around and coincidentally happened to look at me a few times?