E! OnlineZachary Quinto Confirms He's Dating Glee's Jonathan GroffE! OnlineStop plotting ways to win Zachary Quinto's heart—it's already taken. The actor, who came out as gay last October, confirmed that he is in a relationship with Glee star Jonathan Groff, who plays Jesse St. James on the show. "I'm incredibly happy, ...Zachary Quinto Confirms Relationship With Jonathan GroffGather Celebs News ChannelZachary Quinto as Spock in the rebooted Star Trek.