IIRC, Newt told his friends that his wife (she was then his current wife) wasn't pretty enough to be First Lady. Class act, that Newt.
Here's another:
Kip Carter, his former campaign treasurer, was walking Newt's daughters back from a football game one day and cut across a driveway where he saw a car. "As I got to the car, I saw Newt in the passenger seat and one of the guys' wives with her head in his lap going up and down. Newt kind of turned and gave me this little-boy smile. Fortunately, Jackie Sue and Kathy were a lot younger and shorter then."