I’m guessing his pheromones fit all of their (genetically similar) chemoreceptors. Chemistry is a necessary but insufficient requirement for long term marriage.
Or..., they were all "A Little Off?"
I was friends with identical twins: Jen and Bev.
Their relationship was weird. All I can say is that sometimes it’s better if the egg didn’t split. Jen and Bev were almost one person.
Beautiful, slim, long hair, friendly. The last I heard, they each got married, but live near each other. They always dressed alike, even in corporate America.