As someone who went to marriage counselling sessions with 2 different counsellors in a 6 month period. I can tell you definitively, if you were the one that initiated it, it will not work, they will either tune out the counsellor if they get called out for their behaviour or they will manipulate the counsellor to make it seem like it was a both people problem. In either circumstance they will avoid actually doing the work and will see counselling as a "I tried everything i could" way to make it seem like they actually tried. My ex left our marital home during first counsellor sessions and drove to her lovers house during our 2nd when we were trying to reconcile and living together and i was home. She even continued with the marriage counselor as her solo therapist, and would apologize for things and ask me to go out with her for coffee only to ask her lover immediately after. Marriage counselling and reconciliation only works if they are wanting it, otherwise you are just giving yourself false hope