Samantha Who?:

Andrea and her basketball-playing boyfriend Tony Dane, go on a double date with Todd and Sam. But Sam causes trouble in Tony’s life when she thinks she has discovered a secret about him and thinks he's up to no good. She decides she must act to protect her friend.

Todd doesn't like being just the roommate anymore, while there my be a new woman in his life. Dena inadvertently begins an online liaison with a lonely soldier pen-pal in Iraq, but she wonders if it means she's cheating on Chase and how he will react if he finds out about it. She decides to turn to Regina for help and advice, but even she can't help when she has a very surprising visitor.