Girl Gets A Frontal Wedgie Is It Weird For Me Not To Get Aroused?

Is it weird for me not to get aroused? - girl gets a frontal wedgie

I am 17 and I usually do not get an erection fast as if I am a hot girl in a bathing suit or something. Well, I'm gay and I'm very attracted to girls. It's just that I do not seem to always have an erection when I see a girl before. What does this mean?