I must be the odd one out... I'm actually more comfortable around people I find attractive...
Of course, I never converse with anyone, so it's rather hard to think of examples and I'll have to time travel back to school to give one... I was able to talk more freely with my crush than I could with anyone else at school, including my "friends"... Maybe it's due to the fact that I'm attracted to personality traits that hide behind certain looks or expressions - I don't know, but I definitely felt more comfortable.
Of course, this is all relative, I'm not actually comfortable around anyone other than my husband... And at school there was nobody I was actually comfortable with.