Good night the right thing to do is to forgave an try to forget. I said try because forgetting seems a lot harder than forgiving but keep praying and you'd see you'd over come it . Revenge is the evil way. God said Vengeance is mines He'll deal with the situation in a very professional manner for you even if it takes years He will.
Also if you believe in God am sure you do sin and ask him for forgiveness and surely He do forgave us time atfer time, so you do like ways okay