Is it normal to be angry about the stuff your girlfriend has done in the past with other guys?

Ok so I am a junior in high school(17 years old) and my girlfriend is 16 and a sophomore. We will have been dating a month on sunday. She is quite promiscuous but, she is a virgin and so am I. Well the first time I ever met her I didn't really talk to her. I went to my friends house one night and he had her over and they were flirting and stuff. We watching a football game and he went in the back room and she followed. She gave him a ******** and it was her first time. He didn't physically force her from what she told me but, it definitely wasn't her idea. That was in January and whenever I think about it I get super pissed because my best friend a) always brags about it b) she hasn't given me one yet. That was the second time they ever met and they weren't even dating. It hurts me to think about it. I honestly wouldn't even want one at all if she hadn't given him one but, since I know she has before it makes me so paranoid I always think why wont she give me one. I really hate my best friend for what he did I didn't even like her then. He totally used her because he was interested in another girl at the time. Is this normal the feelings I'm having? What should I do to control my anger and this situation? I have already told her how much it hurts me.Is it normal to be angry about the stuff your girlfriend has done in the past with other guys?
well when she did that to ur friend she was just looking at a one time thing prob and she prob really likes u. she doesnt want to ruin it yet by doing that. she wants to go slow with u cuz she likes u! :)Is it normal to be angry about the stuff your girlfriend has done in the past with other guys?
Well, uuuuuum, uuuuuuum, uuuuuum. I really don't know how to answer this one. You both are too young for sex any way. Don't hold it against her and see what happens.
Just end it with her it does not really matter
if you guys were dating i would dump her thats cheating
The past is the past and I wouldn't judge her on it. Give her a clean slate also maybe she thought it was a mistake to do that in the first place and really has true feelings for you and doesn't want to screw it up. I think to answer your question it is normal for you to be upset, and your friend isn't a very good friend to be bragging all the time about it, I would tell him to shut up all ready,it must be hard on her to get that kind of rep. maybe it's not true.
You're 17? You're still young, but you're getting to the age where it's time for you to grow up. Every girl you date is going to have a past that doesn't include you. It has nothing to do with you, and isn't really your business. To be angry because she's been sexually active with other guys is kind of immature.