I'm sorry but there is NO EXCUSE for cheating in a marriage whether it's for hypersexuality of any other reason. She just needs to deal with it within the marriage as best as she can.

Just because we feel a sexual desire for someone outside our marriage, it doesn't give us the right to commit adultery....it's just wrong. If it comes to something outside the marriage, they I say end it with divorce....it is her choice, but I would hope if she really cared for her marriage/You, that she wouldn't want to take her hypersexuality or anything else outside the marriage.....sounds like an excuse to me & she thinks that it will make you feel sorry for her & give her the OK to be commit adultery in your marriage.