The lies would have me leaving, b/c one, that's not what I signed up for, and two, I'd wonder what ELSE he's lying about. This is a MASSIVE thing!
For myself, my MIL got oddly pushy about how much my income was at one point. I flat out refused to tell her and said it was none of her business.
She admitted that she wanted to decide how much we could afford to give her a month. Say what now? The woman had zero clue what our expenses were, nothing. She thought that she was entitled to a percentage of our income b/c my DH owed her for adopting him, and since we'd refused to move her in with us, cash was the LEAST we could do.
That was a big fat Nopeasaurus.
As things turned out, not only was MIL never in need of money, she was donating/tithing to her church monthly, about 30% of her income! Her church was bold enough to ask my DH if we'd be continuing after she passed!