<human>: Can you summarize the given text in a few sentences?

Okay, the full story isn't in the title. I like this girl, she likes me. We've been friends for over a year now. We're both virgins but she had oral sex with a guy about a month ago. 

She did this, before me and her we're even close to a thing but I still can't get over it.  

FYI The dude and her aren't talking anymore they live a good amount of time apart. I don't I'm just so sad about it and I don't know why. I know its not fair to her and she doesn't deserve this but I feel like she wasn't the person I thought she was. Can someone reason with me?
<bot>: I like a girl, she likes me, she had oral sex about a month prior to us liking each other and I'm not sure how to feel about it. Help?