I'm poly.
When I discuss this sometimes, the person is initially chill.
When the thrill wears off, and they develop emotions, suddenly it's "But I care about you."
"I CARE ABOUT ALL OF YOU THAT'S THE POINT"
@Maenad the relationship escalator is broken, please find alternate routes to happiness
(srsly though the escalation thing bugs me. I really want to end up with a co-op to raise a child)