Drained...I would tell him nothing.
It has come to the point that you need to prove by example the life you intend for you and your kids, with or without him. Your strength will perservere, if you allow it to.
Just like with the addicts in our life's we must act, not talk about acting, and if they choose to follow, then there is hope. If they chose not to, there's not a whole lot that can be done by us to change that.
(((Hugs)))
Cece