The Once and Future King Book 4, Chapter 6
It is night, some time later. Lancelot, knowing that the King has gone hunting, is sure Guenever will send for him. Gareth comes to see Lancelot, however, and begs him not to go to her. He believes that Arthur has been forced by Gareth's brothers to go away, so as to set a trap for Lancelot. He tries to convince Lancelot of how much they hate him, but he is too innocent-and eager to see the Queen-to listen. He brushes a very upset Gareth off.