The Once and Future King Book 3, Chapter 42
When Lancelot arrives, Meliagrance gives in immediately-he was never really evil in the first place, just in love. He asks them to stay the night, and they agree. When Lancelot sees Guenever, he understands that she has given him up to God-she is no longer jealous, and only wants him to be happy. Curiously, this makes him love her again, as if nothing had ever come between them.