When the two were wrapping up their duet, "Marvin Gaye," they leaned in for a kiss that turned into a steamy make-out scene in front of the crowd and the cameras.

As chatter heightened about a possible secret romance gone public, Puth hit Titter to silence the talk. "before it begins�we are just friends," he wrote, "so happy to preform with meghan tonight!! thank you for all the love everybody! :)"