Okay so I'm pretty sure I'm lesbian and the reason for this is that when I read something naughty straight stuff makes me sick. When I read lesbian erotica I like it... until they start penetrating each other, but everything else excites me and I know I want to have sex. If you are having sex with a girl does there have to be penetration? Is it unusual to not want it? I mean just the thought of it makes me sick.