Attractive women have a lot of options. If she is direct enough a woman can have sex with pretty much any man she desires. The modern woman also has a lot of venues were she can freely choose men. Unlike men, women can make sexual advances without being accused of sexual harassment or being creepy. Basically an attractive woman can have as much sex with whoever she wants and there is nothing you can do to stop her.

This is kind of unsettling because if you are dating an attractive woman at any point she can get uppity and hop on some cock and there is nothing you can do. Also there is a high probability that if she does, you will never find out. This reality creates defensive boyfriend syndrome, which ironically is a recipe for getting cheated on.

Iv always sold my dick to women with the same smug confidence that I use to sell personal training. Loss aversion is a very powerful motivator in humans. At some point or another when she mentions other dudes in an exceedingly positive manner you know its time for the talk.

Listen there is nothing I can do to stop you from fucking other dudes. You can do whatever the fuck you want. But your never going to find a guy as built intelligent and funny as me. Its just not going to happen. If you cheat on me your just going to end up with a skinny fat dude that can't hold an interesting conversation. Your going to be bored and unsatisfied and in the end your going to wish you were fucking me instead. However you wont be, and you will never again. If you want to step out of a Ferrari and ride the Greyhound bus that's totally fine by me. Your only fucking yourself over, and there are plenty of people that want to ride in the Ferrari.

That's about all you can do guys. This is why self improvement is so important. The only thing you can do to prevent your girl from fucking other dudes is to be better than any dude that she can fuck.