There hasn't been a post to this over a month, but I wanted to add that addictions not only have a psychological impact, but also a physiological impact. Unless the vicious cycle of both are broken and resolved, it's truly hard for people who are truly addicted to something to quit.
Every person's physical body is different. Some are more prone to addictions. You also have to look at the psychological makeup. So, you have to get to the root of the psychological issues. For this wife who does the cheating, or anyone else for that matter (and I'm no therapist), has low self-esteem. If they truly valued who they were, they wouldn't do that.
I know, I committed adultery on my ex-husband. And, what appeared on the surface to be a lack of sex in our marriage, which led me into an affair...it really wasn't that. It really stemmed about how I felt about myself, which I hated myself and I didn't think I was all that valuable as a person...even though I knew Christ died for me and accepted that. The lifetime of devaluing myself and having that reinforced by my parents whom I looked up to, really created this awful person.
With the right help for my problem, we were able to eventually get to the root cause and not only talk about it, but eliminate the physical sexual addiction (as well as many other addictive behaviors) through natural means (Emotional Freedom Technique - EFT). I am truly a different person, and I know what it means to be forgiven and loved.
There is hope. You gotta look to see what God is telling you to do. God is working in and through you...around you....you just have to be observant enough.
Blessings,
Doris