Thanks for posting! I'm glad you have stepped up and are making a true effort to correct your actions from the past. I encourage you to scour the web for resources in regard to infidelity and affairs. You face a long and winding path to return the trust of your W. I also strongly suggest individual and joint counseling. Make every attempt to find someone specilizing in infidelity. There are many resources on the web for telephone counseling.
From my personal experience, I do not know how to describe the depth and range of emotions an affair can have. The scars run deep and the healing takes time. The effort you put forth will define your true character. This effort is best presented with actions, not words. Let your W see how much she means to you and let her see your true remorse. Keep visiting and keep posting, I'm sure you have insight to share and we will respond in kind.