Firstly, I wouldn´t have gone out with a married man. Not only was he married but he also had a teenage daughter. Their affair lasted for six months, in which they took many risks, lying and hiding from Graham´s wife. I would have given an ultimatum and made him choose between his family and me.
But she underestimated the delicacy of dating a married man. She had had a protracted affair with a married man some years before meeting graham. She might have had a second thought as separating from his family might cause a significant alteration in a man´s mind.
Secondly, I would have been more perceptive and