It's bad to find pleasure in pain.
Frank has discovered his girlfriend Lisa likes receiving pain while having sex, and she asks him to indulge her.
Frank wants to respond to Lisa's request.
Frank explains his reservations to Lisa and urges her to seek professional help for her unusual desire.
Frank decides to please Lisa and smacks her while they are having sex.
Frank maintains a clear conscious regarding his relationship with Lisa.
Ignorant of how to give pleasure through pain Frank ends up seriously injuring Lisa.