Her Best Mistake

Maybe other forty year old divorced women were different, but Lisa Dennison was not the kind of woman to climb into bed with every guy she dated. Actually, she should never even have agreed to date younger man, Eric Roberts at all. She was flattered by the attention, but as a person, Eric never really interested her.  

So how can she rationalize sleeping with Eric's Harvard Professor of Archeology twin? What she did with Finn was a big mistake even if it doesn't feel like one.