Andrea

Of course it had to be Andrea. Andrea was the one that first led Sam to ponder the idea of cheating on his doting wife. The fertile cousin was the perfect first target for Sam's cock. Sam will claim her as his, right from under Ben's nose. Not only that. Sam is going to ensure everyone knows she is his. Sam is going to fuck a baby into her. The question is how? Clearly she is in love with Ben. Sam looked at the plates. Almost empty. Andrea would be clearing the table soon.

Sure enough a minute later Andrea began to stand. Grabbing the nearby plates. Sam also noticed Ben began to stand to help. This is Sam's chance. He can offer to clear help Andrea himself instead.