How interesting would it be for David's father to seduce Anna when she has a moment of weakness? He takes her to dinner under normal circumstances and Anna drinks a little too much and she starts to unburden her troubles on father-in-law. The father also had a little too much and while driving her home, he flirts with her innocently and Anna pushes the envelope because she is also getting aroused. She starts to touch him and it gets hotter, at a stop light she goes to kiss his cheek and kisses his lips instead but doesn't pull away. Instead of driving her home, they go to a hotel, have drinks brought to their room and it begins. They end of fucking like rabbits, in a spa, sauna, on the patio and in the bed. (maybe, Anna ends up pregnant by the father-in-law). Their fling, becomes a thing.