You are not stupid. Your virginity is a big deal! At least for me it is very important. I didn’t give it away until I was actually in love, not because I was attracted to some dude. Your friends are very foolish to do this to you. I totally approve of you waiting, it means you are very mature. Don’t let yourself be pressured because they are not being very good friends. I am very happy to know that you value yourself and beliefs besides all the pressure and stupidity around you.