And though it's not officially official, "We're supposed to start writing it Monday, so if my deal doesn't close, a different kind of history is going to be made," Harmon jokes.

With season five's start date just around the corner, Harmon admits to us he has yet to watch season four, which was overseen by Happy Endings writers David Guarascio and Moses Port, but is planning to binge-watch it.

"I am going to watch it I think when I get back on Sunday. I'm just going to sit by myself, pop some popcorn and watch it," he says. "I'm not going to be a jerk about it. I know there were some great writers working on that show who bled with me for seasons one, two and three…the worst thing I can do is fart in their direction at all."