I wanted to add.

I battled with my reply there.

I've been the recipient of knowing my dad was cheating.

And have found out 4 months ago my husband has a mistress. So I've seen both sides.

I was trying to give a response as to how I dealt with it, when I found out my dad had been unfaithful, taking into account my role as the child and not really wanting to get involved in his business.

Having said that - I know damn well first hand how much it hurts if your dad were to find out your mom is being unfaithful.