'One of the most interesting things I've noticed, though, is the reaction others have when I tell them I go to parties or bars by myself (or even to dinner or to movies alone). They're taken aback, and they almost try to marginalize you as some sort of loner.'

I've actually had the opposite experience. Sometimes I'll go to bars by myself just to hit on girls. When your friends aren't around to watch, it reduces the downside and fear of rejection.

Usually, if it's going well, I'll tell her I'm there by myself, and they tend to be impressed I had the confidence to go out by myself and approach them.