I see different kinds of advice on this board, and I want to express my absolute opinion on it.
I am fine with the whole GAL thing. Where I am NOT fine with it is when we give spouses who are trying to DB "permission" to go hang out with members of the opposite sex while at the same time trying to save their marriage. This is a divorce busting message board, not a divorce causing message board. And truthfully, it's CONFLICTING advice to the person who is trying to save their marriage.
OIN needs to put his focus on his W. Period.
In this case, if OIN is not careful, he will involve a FOURTH party. There is already is/was a third party involved.
OIN's life is complicated and stressful enough as it is.
