I had major row with my wife. Not speaking. Two children 19 and 20 yo. Separating would be difficult, what can I do?

Marriage counselling but no conclusions. Can't meet anyone else because I'm married and i don't want to have sex with wife because of the row. Stuck.

I can see this taking 3 years to overcome
I had major row with my wife. Not speaking. Two children 19 and 20 yo. Separating would be difficult, what can I do?
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