Sam/Andy - the one where they ran into an ex-boyfriend of Andy's at a bar

Sam is glad this party with Andy's college friends (and a few from high school) is being held in a bar. At least he can sit and watch the game with some other guys while Andy flits about being her usual social butterfly self. A new guy sits down and introduces himself as Chad and mentions that he and Andy used to date. Sam recognizes the name, and it takes everything in him not to crush Chad like a bug. Instead, he just nods. Chad is the guy who in high school made Andy insecure about receiving oral sex. He doesn't know exactly what happened, but he knows something made Andy uncomfortable with the idea. He got that much out of her.

To Sam licking Andy McNally to climax is one of the best things there is. He is an expert on making Andy climax and he knows he does some of his best work with his tongue. After all, he's made her as close to speechless as Andy McNally gets.