I think that is a literal storyline in Belgarath the Sorcerer. The wizard, Belgarath, spends thousands of years monitoring and manipulating various family lines. One of those is a line of dryads who are tiny and all female. He was "forced" to mate with them or they would kill him with bows, but he didn't really complain about it. He is able to avoid these "conflicts" in the future after discovering chocolate makes them orgasm.
Some times you don't think about how weird this shit gets until you explain it to someone else.
Funny how tools are useful. But a person who is a tool is not.