Best wisdom for the betrayed one...?

Forgiveness does not and will not come easy. It's been three years since my similar situation (VERY similar situation) and I still haven't forgiven the B%$#@. It's best to get away from her as far as you possibly can. Revenge isn't going to help you and you're very likely to get hurt in the process. Find yourself a rebound girl and get over the cheating woman. If she's cheating on you, she really can't be worth it, can she?