Well maybe DQ it was a slip of the tongue on your part, I only quoted what you wrote and discussed it further.
Michelle Langley has a great e-book on why women cheat, she has done a crazy amount of research on it and it's from a woman's perspective, if you ever get the chance, read it (this statement was intended for anyone reading this comment).
DQ you aren't an idiot, you made a bad decision, but don't let that decision label you as a specific kind of person for the rest of your life.