This has happened to me multiple times while going out, and it happened to me again this past thursday while at the bar (college bars) I'll be talking to some girl I met there, and about 20-30 minutes after talking to her, she'll say something along the lines of "You actually seem like a really nice guy .. I noticed you when I first came in here, but I wasn't going to come talk to you because you just looked like you would be an arrogant asshole." The one that I got this weekend was "Guys like you are trouble." But as I just talked to her throughout the night, she opened up a lot, gave me her # and stuff, etc I must get this at least 1/3 of the time that I go out and end up talking to some random girl. What makes them think that I'm an asshole without ever talking to me?