I don't know
what to tell you about your problem, But I will tell you not to come here for advice, these guys all sound about 12-14 yrs old.
Don't cheat, that lowers you as a human.
What is suprising about all of this is guys sometimes(not the smart ones) often chase girls who haven't had alot of sex(less than 10 partners) thinking these are the good girls and end up with scenarios like this later.
You like sex, want it forever.......get a girl who likes sex...alot. Be happy and forget the rest of the crap.