I think sincerity, showing her through your actions that you ARE sorry, that it will never happen again......and time. You can't DO anything about time, just pray, wait and show her you DO love her, you ARE sorry, it will never happen again and you want HER.
I am also the cheater
....Understand, that I can't, not be what I am I'm not the milk, and Cheerios in your spoon ~ Avril Lavigne ~ ..."Nobody's Fool"...