Jamie Campbell is a character in Fallout: Project Brazil. If you talk to Eric Campbell, he says that they are in a relationship, which may be incestuous; The player has the option of flirting with Jamie after winning the big game. The player with the right stats can determine whether or not Jamie and Eric stay together as a couple. If you choose to seduce Jamie, then they will break up and both with die when you go to sleep. So there's no real advantage to seducing Jamie.