What about moving back in with your wife?
I'm sure you are capable of charming the mother-in-law. Apologize to her, even if you feel like it isn't warranted, and then kiss her ass everyday. Make her love you.
If you want to stay married, you'll have to be part of the family and sometimes you just have to do what you have to do.
Besides, the chances are that immigration will find out. They might be closing in already. One way you can tell is if you notice men in black overcoats on the train who aren't paying any attention to you. That is a hallmark of immigration agents following you.
If you notice while sedans in your neighborhood, then they certainly have you under surveillance.
Seriously, either be married or don't be married. Living in some odd state of limbo is bound to catch up with you in more ways than one.
From your many stories of being a horn dog, it doesn't sound like you are ready to be a husband.
Maybe what you need to figure out is if you really want to be married.