I told my wife, in this EXACT same situation, that "I have too much love and respect for your mom to lie to her about your affair."

And

"I've decided that I'm no longer willing to lie to cover up your affair."

M57 W 57; D30 D28 S24 S20 GD7 GD2 GD1 GD5m GD1m
BD 5/07; W's affair 5/07-8/07

At the end of every hard-earned day, people gotta find some reason to believe. (Bruce Springsteen)