Although I respect your views, I am one husband that can confirm that once a husband is cut off from sexual activity this does NOT mean the end of your marriage.The moment a husband is cutoff from sex with his wife, the only course the marriage will follow is divorce.
Good thing you didn't follow that route.
My wife had a Black Lover for 4 years. That was around 5 years ago when they split up (but thbose reasons are another matter).
My wife cam home one day after a weekend away with him and sat me down for a chat. She was worried and upset and so I asked her what the problem was. She broke down and cried and told me that her Bf wanted her to be exclusive to him sexually and she was having a problem knowing that this would upset me. She also confessed afterwards that she was also worried in case i stopped their relationship (something i would never have done anyway).
It took me all of 2 seconds to agree to this arrangement. My train of thought? Simple really: He is giving her the best sex ever. I have problems fulfilling her sexual needs. What is there to decide other than my levels of sexual contact (if any)?
In the end, they decided that it was ok for me to wank. Also that my wife would, every now and again, give me a hand job (although that stopped very quickly as she would always tell me to DIY after a couple of strokes), I could clean her or give her oral now and again when she decided. We kissed a lot. We cuddled every night when she was with me. We spoke about a lot of things, more than we ever had. We both expressed our total commitment to our marriage and declared our love for each other.
What i could not do with my wife: Have full penetrative sex.
We have now been married for 20 years. We have a solid and stable marriage and although she stopped playing after their relationship ended, would i go down this road again with my wife? YES, without even thinking about it this time.