We already knew Mayer wasn't exactly singing along with the Swifties to "Dear John," the songstress's rumored ode to their romance. Still, we stayed strong believing that someday, somehow, they'd reunite for a duet … but we'll have to stick to 1989 on repeat for now. "You can see me at the Grammy Awards doing what I do best," he joked in February 2015. "Being avoided by Taylor Swift."