First lie. If a married guy is willing to work hard to get a woman excited....it’s his wife already. He’s looking for ease because he’s a lazy turd.
Sounds like her fantasies. The “side piece” has to put out or the cheater will get out. The cheater has no obligation to her keep her around and can easily move on to more fertile ground. She knows that, obviously, and is creating some fantasy to justify her position.