well think, why did she cheat on you. was it your fault or is she just unfaithful. a lot of times girls cheat b/c she feels that her man isn't giving her something important. she wants to make her man jealous. the same thing happened to my friend b/c her guy wanted to wait a year before full commitment.
if she is just a cheater then you have to move on. chances are it will happen again and again. that's just the way some people are.

You could try one of taco bell's two delicious, new 1/2lb burritos.