Aug 14, - Mainly, I imagine situations where a girl is having lesbian sex for the first time. was one time that I hooked up with a girl, but I decided it's just not for me. . sexual lair in our brains, there's some hot girl on girl action going on. Feb 1, - How to tell if someone you know is a lesbian. So, as I mentioned above, hair is not going to be a good indicator of sexuality. 2. Clothes: Like hair . If you like her, sometimes the best course of action is to simply go for it!