During wolf mating season, werewolves have difficulty retaining their sanity and some actually end up banging wolves. Even the dragonborn struggles to keep his self control. His wife is absolutely disgusted by the idea of her husband banging an animal, so she takes it upon herself to please him. Even if it means chaining him down when hes in werewolf form and milking him like a cow until hes so sore he begs her to stop.

bonus if DB is hung huge, and it just gets bigger when he goes werewolf. preferably nord or khajiit for both wife and husband.