Watch: Ne-Yo Introduces His 4 Girlfriends From Polyamorous RelationshipSome stars aren't looking for a one-and-only connection.Take Ne-Yo, for instance. Back in March, the Grammy winner introduced the internet to his four girlfriends-and he doesn't care what anyone has to say about his relationships."Say something nice or move on with your life," he wrote on Instagram March 8. "We happy over here."That's not to say that Ne-Yo has always required his Miss Independent to be down with polyamory. The "Closer" singer was previously married to Crystal Renay, mom to three of his seven children.