Hi Jurs. I think most people go through this when they are married or even just in a long-term relationship. Things get boring and you start to take one another for granted.
You say your husband is a S.O.B.. What is wrong with him?
I don't want to pass judgment but I think you should really think about this. If the other guy is married I think you better find out for certain if his relationship is over or not. If he is separated and his wife is thinking of taking him back I don't think you would want to have any part in stopping that from happening.
Why are you still with your husband?