Forget all the horny answers; they only satisfie their needs upon your own life.
If you cheat on your gilrfriend, you will regret it, feel guilty, be sad after all... Nothing to gain here. Especially self-estime!
If you break to go with the hot one, you'll always think that, if she sent you pics, she could do the same to another man... A pushy person is not really a person to trust in. And that's a dangerous way to start a relationship.
The only question here is: do you love your current girlfriend enought to stay with her, even if sex isn't fabulous? If yes, you've got your answer. If no, you've got it too! ;) Your hot friend has nothing to do in this decision at first.
Besides, girls can change with time, you could surely get your girlfriend to new horizons. If you love yourselves, you can talk and find a way to enhance your both lives!If I were you, I'd talk with my girlfriend and do my best to go ahead with her; then only I would think about leaving, and in no case I would cheat on her.
