I am 41 and raised in the deepest of the deep south. I expect a man to pay when he asks me out on a date. Including the tip. I think that guy was showing his selfishness when he asked you to leave the tip.
If you had offered and he had smiled and taken you up on it, and thanked you, that would be different, but he was trying to make you do something, and I consider it bad manners at a minimum and possibly manipulative.