You're thinking of another movie, maybe? In Bedazzled (one of the funniest movies of all time), the devil is Peter Cook. The man being tempted is Dudley Moore, who was brilliant in that. And the girl is Eleanor Bron, who just goes around being a hot babe while playing her parts in these connected sketches hilariously.
Bedazzled is a 2000 American comedy film directed by Harold Ramis and starring Brendan Fraser and Elizabeth Hurley. It is a remake of the 1967 film of the same name.
I've seen both. You're talking about the 1967 version.