Uh-oh, drama is a-brewin' on the Glee set and we're not talking about the scripted dramz!
Talk about a figurative slap in the face!
But maybe life is imitating art for these two!
We're guessing by the audience reaction that they did NOT expect to be hearing the steamy new song Who You Love on Tuesday night at the Barclays Center!
Or if they did, it that it would just be John singing it to himself. Weird, but still kinda sexy… LOLz!
See the adorable couple duet …AFTER THE JUMP!!!
[Image via YouTube.]