if you cheated back then you are no better than she is, forgive her and look back for the reasons, you might have done something that pushed her to cheat on you , neglected her need maybe or disrespected her sexual need or you have never listened to what she wants, women are no cheaters in nature, cheating is originally in men and its by a strong reason in women.

why would some one allow his wife to have all the pussies she wants but no cocks, what if she got completely attached to another woman and became a total lesbian that hates men, what if he one day came home and finds his wife with a woman in the bed , what should he do, leave them alone or fuck both of them ??