Straight men enjoy looking at women's bodies, and lesbian action means more women to gaze upon. 'More female flesh,' is how a man I once knew succinctly put it. It is not difficult to understand why so many heterosexual men enjoy lesbian lovemaking. Mainstream porn films traditionally feature at least one scene of two ladies getting it on. Anyone who picks up Playboy, Penthouse, Hustler, or any hetero men's sex magazine is apt to find pages of female-on-female action.
That heterosexual MEN relish watching lesbian sex is a matter of common knowledge as well as social research.
