"Pretty Little Liars" season 6 may be taking its summer break, but cast member Keegan Allen seems to keep his schedule busy. There have been a lot of tweets on the show's official Twitter account of his guest appearance in "Young and Hungry."

Fans know him as Toby Cavanaugh, the hottest cop in Rosewood (don't you agree?). Allen's silent, romantic and protective character had also been involved and kicked out of the "A" Team.

Allen has become popular, especially among "Pretty Little Liars" fans and teens, but how much do you really know him? Here are five facts we have learned about Allen that fans might have missed.

1. Growing up, he was isolated from the world.

Allen is the only child of the famous Phillip R. Allen, who starred as Captain Esteban in "Star Trek III: The Search for Spock" and the American painter Joan Snyder, as per IMDb.

Since he grew up isolated from the world he did writing and photo taking. Allen said he would sit and ponder, sometimes stare at the plastic bag for 20 minutes and say, "It's beautiful."

2. He believes in superstitions.

"I have so many ideas. But I'm extremely superstitious about sharing them," the "Pretty Little Liars" actor told Gurl during his interview in February.

He also revealed that he didn't tell anyone about his book until it was on its final stage.

3. Life. Love. Beauty — that's the title of his book.

Allen's first book is in fact, a photo journal. It will show pictures of his life both in and out of the Hollywood spotlight.

Fans can order a copy on Amazon, Barnes & Noble Bookseller, Indie Bound, Books-A-Million and iBooks.

4. The "Pretty Little Liars" hunk is multi-talented, but can't dance?

Allen loves everything about arts — acting, photography and writing. If there's one thing he is not good at, he said that would be dancing.

Here's a video posted by PLLoholic on YouTube. Watch it and you decide.

5. This "Petty Little Liars" season 6 cast can't sing?

Here's a separate video shared by PLL&KeeganAllenFan on YouTube of Allen singing, or dubsmashing?

His character, together with Ezra and Caleb, will be back in "Pretty Little Liars" when season 6 returns in after its summer hiatus on ABC Family, Melty reported. It has also been reported that the Liars' parents, Melissa, Wren, Lucas and Jenna will be making an appearance.