Ask her, see if she is receptive to the idea. That's the best way to find out.
Why Does My Girlfriend Like Watching Lesbian Porn?
She's dreaming of the day (or night) that she can enjoy another girl like the actors on the screen. Let her explore that side of her sexuality. I'm bisexual and I think that I have the best of both worlds.
Maybe because she doesn't like to see the guy naked...its not really appealing to see a naked guy,I don't know why. But maybe just seeing something intense and exotic turns her on, and I don't think you should be worried about that.
No. She probably isn't a lesbian. Scientifically girls find other girls porn interesting and it may turn them on. Don't worry
May be she prepare herself to be lesbian
Maybe she wants to learn new things to do to you. And if that bother you talk to her
Just go with it I'm sure that helps her to get going and ask her to bring a friend in,another woman.you should be happy instead of asking why
Because it turns her on. Doesn't mean shes bisexual or anything, she's just checking it out :)