Well, first of all, you may not be "oversexed," for which there's no definition, anyway. Even though your husband may not share your desires for sex, that doesn't mean there's anything wrong with you (or him); you probably just have different sex drives.

If you and your husband can't come to a compromise, maybe you should seek a sex therapist and both of you go. (If he won't, then go yourself.)

If you're having problems controlling yourself, feeling that you might cheat, then you may very well have a problem, and again, I'd recommend seeing a sex therapist. Having different sexual desires is not a reason to cheat.