Justin Timberlake addressed the tragic news.

“Hearing that someone who made a room so happy was suffering so profoundly behind closed doors is devastating,” said Justin Timberlake, Boss’s close friend of more than 20 years. “tWitch has been a member of the dancing community for almost 20 years and always lights the place. Simply put, you can never fully comprehend what another person is experiencing.”

“Look after one another,” he continued. ” Look after your people. I’m sending light to his lovely family during this terrible and dismal time. Sir, we will miss you. Rest in peace .”

On Instagram, JoJo Siwa, Boss’ SYTYCD co-judge, expressed heartfelt tribute to him, calling him “forever the world’s dancing dad.”

“My heart is broken. Twitch was a mentor and best friend to many others, including myself. He became such a bright spot in my life during our time on SYTYCD, and I’ll never forget that.”

“My best friend is now someone I’ve admired since I was born,” Siwa wrote. “Twitch was always the finest advisor. We laughed, smirked, and even shed a few tears. Even though I know you’re in a better place now, we’ll all miss you horribly.”

“My heartfelt condolences and prayers go to His lovely wife and their three great children. I admire your willingness to share your talent with everyone. I want to see you again one day (A inside joke between us that I will never let go of). Dad, the world will keep spinning endlessly. I adore you, brother. Rest in peace, Stephen Twitch Boss.”

Pro on Dancing with the Stars Cheryl Burke posted a message on Instagram and two photographs of herself with Boss. She thanked him in her article for “always putting a smile on my face, being so pleasant, and motivating.”

“My heart breaks for @sirtwitchalot, @allisonholker, and their beautiful family. Twitch, I adore your elegance and positivity as a representative of the dancing community, but more importantly, I admire you as a person,” she wrote. “I’d like to thank you for always making me laugh and being so upbeat. My buddy, may your soul rest in peace.”

With Boss, Channing Tatum posted an Instagram image with the caption: “Having no words, There are none. This is beyond my mind and heart to comprehend. Simply put, there is simply too much… I can’t think of anything to say. I love you. My friend, I’ll see you again.”

“This is heartbreaking,” Katie Couric says. “Stephen “tWitch” Boss, a popular producer and DJ on the Ellen DeGeneres Show as well as a dancer on So You Think You Can Dance, committed suicide,” she continued on Instagram. “At the time, he was in his fifties.”