<human>: At the start of the relationship (1.5 years ago) she would have never even considered doing something with another girl. But recently, she's started to show an interest in girls and wants to have sex with one. This bothers me so much. She says she wants to know what it feels like but I can't stand the sight or thought of her being pleased by another person. It doesn't matter if she's a girl. I feel like I should accept it and there's nothing wrong with it but it certainly does feel like cheating, she's not lesbian or bi she's just curious. It's not like she's constantly pursuing to want to have sex with a girl, it's just something she wants to do.

So I offered an alternative, what if we have sex (just me and my girlfriend) while you do stuff with the other girl. She said she doesn't want that at all and doesn't want to have sex with me when she's with the other girl, this hurt me a lot. Is it normal to be hurt over that? She said she'd be okay with giving me oral while she gets eaten out but still, that's not enough, I feel left out and like a nuisance. Why does she want to do it without me so bad? She says she wouldn't want me to have sex with the girl, which is hypocritical. Just the thought of her wanting to have sex with another person hurts me, I wish I could accept it and not let it bother me but it does. It's almost as bad as her saying she wants to have sex with another guy. And the fact that she wants me involved as little as possible really hurts me.

Can you provide a brief overview of the text?
<bot>: girlfriends wants to experiment with another girls, I feel insecure about it and I don't want it to happened. But I also feel like I shouldn't feel insecure and I'm not normal for feeling jealous about it