Most women are dumb as shit, you can't convince them of anything. They know the one and only thing they need to know: if you can't control him, hump someone else. Once they learn this, they never learn anything else ever for the rest of their lives; because they don't have to.

Notice, I said MOST. Present company excepted... She wouldn't be here if she were one of those...

You have to be willing to walk away from an anchor. They don't care what happens to the kids, only had them to leverage you anyway...