Would you divorce your husband/wife if they cheated on you?

I want to ask this because marriage is supposed to be "for life", through the good and bad times. I know some women and men who would stay. I know some who wouldn't. This doesn't mean that you wouldn't be angry, or separate for awhile. It means you would actually divorce them, and be done. I personally don't know what I'd do, but I know I would if I wasn't married. Please answer the poll & explain why, and if you think there would be a difference whether you're married or not (like me).