That's because we don't view sex as a shameful activity. Sure, be upset the guy you spent time on is a jerk. Whether you had sex with him is completely irrelevant. The majority of people who feel as you do, of your friend did, subscribe to the belief that every guy a woman fuck takes a little piece of them away. Every new sexual partner takes a little bit of purity. Every notch on the bedpost should make one feel disgusted with themselves. If you saw sex in a more positive light, if you weren't embarrassed and ashamed of female libido, the idea of waiting to have sex as some sort of test of their worthiness and respect wouldn't seem logical.
Last edited by london; 01-17-2014 at 02:46 PM.