I am an outsider looking in but your husband's words just ring so loud that he is a BIG BALL OF confusion!! Wow, I have no words, really. I wish I could send your MIL some flowers...SHE IS A STANDUP MOTHER!!! My MIL, nice but not standup like that...I am very impressed.
I hate to see your husband go down this road but he is in for a RUDE awakening. I can also see how you exposing the affair put the brakes on it. Just imagine if they would of had time to put together a plan to bring everyone up to date on their affair.
Me: 28 H: 32 1st marriage 4 both 1 1/2 year married 2gether for 9 1S: 6months 1stepson: 2yo