<human>: She initiated a casual conversation which I had diligently avoided until this point about our sexual past. Of course, I lied and said I had been with about 15 people. In reality, I've only been with 6 people including her. She said she had been with more than 20 guys but also 8 women.

I actually don't feel any weirdness about her being with that many men. I expected that. But I do hate the fact that she's been with more women than I have. She doesn't even identify as bisexual or bicurious and she's fucked more women than I have as a straight male. It's not like I haven't been trying or that I have exceptionally high standards. I have always been a loser in that regard. I've felt insecure about my lack of experience with women and having a girlfriend who has has seen more vag than I have really triggers a lot of feelings of inadequecy. I feel jealous, annoyed and slightly confused. 

I wanted to ask her how the fuck does someone sleep with 8 different women without even trying. I pretended I didn't care because I didn't want to appear close minded. Once or twice I get it, you are experimenting. But 8 different times? Can someone explain how this can happen? I really don't want to tell her that I lied about my number but I also can't get over my feelings of jealousy and insecurity. Can these feelings subside on their own or is this an issue that requires confrontation?

Give me the gist of the text in a nutshell
<bot>: male with limited sexual past doesn't like the fact that his gf has been with more women. Insecurity, jealousy, confusion ensue.