EXCLUSIVE: 'PLL' Star Keegan Allen Spills on His Flirtatious and Funny 'Young & Hungry' Character!

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

There's a pretty little guest star coming to Young & Hungry!

On tonight's all-new episode, Pretty Little Liars' Keegan Allen is stepping away from the dark and dangerous world of Rosewood and jumping into the deliciously fun ABC Family comedy.

ETonline stopped by the Young & Hungry set back in March, to catch up with the PLL heartthrob and get the exclusive scoop on his hilarious, Gabi-romancing role. (Spoiler Alert: Allen's Young & Hungry character is absolutely nothing like Toby. Sorry, Little Liars!)

PHOTOS: 'PLL' Star Keegan Allen Shares Photos from Rosewood

We're not going to lie. We were a bit surprised to learn that Allen, who plays the brooding, and oh-so-serious Toby Cavanaugh on PLL, was going to guest star on the sexy and quirky comedy that is Young & Hungry. But apparently it was all Allen's idea!

"I would always do the PLL live chats and I would see Young & Hungry and I knew [star] Emily [Osment] and I was like, 'I know her! I want to be on that show! It's so funny!'" Allen explained. "And then they wrote me this great character."

Allen will be playing Tyler, a perfect-haired San Franciscan with secret. "He's a transient who lives in his car," the actor spilled. "It's really funny how he meets Gabby under these very interesting circumstances."

"Almost all of my scenes are with Gabi and it's really fun," Allen continued. "We kind of have like a little flirty thing going on." Uh-oh, Allen! Don’t you know how passionate those Spoby fans are?

WATCH: 'PLL' Boss Spills on 'A's Shocking Reveal

ABC Family

Not to worry, PLL fans -- Allen could never forget that his TV heart belongs to another. "I love that ship. Isn't that what they call it?" he said with a coy smile when asked about Spencer and Toby's relationship. "It's a great ship and not only that, I love working with Troian."

Allen confessed that it was great to take a break from Toby's cop costume, and play something entirely different for his one-episode stint on Young & Hungry.

"I'm pulling zero things from Tobias, but it's cool to step into the shoes of another character under these circumstances, which you'll see on the show. It's really, really funny."

"It's a totally different experience," he said of filming in front of the comedy's live studio audience. "I mean I love it because I come from a theater background and having an audience in front of you is just electric. You get to see what works, the jokes, everything is there, it's in front of you. Of course it's not the heightened world of Rosewood, but it's a wonderful world to be in."

Catch Keegan Allen's episode of Young & Hungry tonight at 8 p.m. on ABC Family.