I fucked up. I asked my gf about her past. She kind of brought it up and I was like tell me. She told me that she used to give it up to any guy at a party when she was like 16-18. These parties would happen once a week or every other week. She is now close to 22. She said she was immature and stupid. She has changed a lot from back then. I got kinda pissed, and just told her to go home. I didn't even kiss her goodbye.