Lili took to her Instagram Stories again to share a few words about Luke's passing and frankly, they are downright heartbreaking.
Mädchen Amick (Alice Cooper)
"I'm absolutely heartbroken of the news that we lost someone so incredibly special," she wrote on Instagram. "Luke had become a dear friend. We laughed we cried. We shared our showbiz war stories. We shared how proud we are as parents. I knew that he was always there for me no matter what."
Casey Cott (Kevin Keller)
"Luke took me under his wing the day I was cast and made me feel like I belonged," he wrote on Twitter.
Marisol Nichols (Hermione Lodge)
"I don’t have any words now. Maybe I will later. 💔"
Molly Ringwald (Mary Andrews)
"Goodbye, my friend. 💔I enjoyed dancing with you for a time..."
Vanessa Morgan (Toni Topaz)
"Luke every time I'd see you at work you were a ray of light. With a big smile saying "hey hunny!" Still don't believe the news."
Roberto Aguirre-Sacasa (Riverdale creator)
"So heartbroken about Luke. He was a father, brother, friend, and mentor. Each night before he had to shoot a scene, he'd call me and we'd talk about... everything. I will miss those calls. And my heart goes out to all his family and friends. 💔"
Former Riverdale star Ross, who played Reggie Butler in season one, posted his tribute to Instagram.
"We lost an original today. A legend. He paved the way for us. Although we didn't work much together, he always greeted me with a smile, had a joke ready, and a story to tell. Rest in peace, Luke. Rest easy."
Nathalie Boltt (Penelope Blossom)
"Luke made people feel safe and valued and welcome. Luke made us laugh. He certainly made me laugh. He was gracious, kind; a gentleman. But most of all he was a fine, fine father and my friend. Thank you, Luke. We miss you. Stay close.🙏🏼🧡💛❤"
Hart Denton (Chic Cooper)
"rest in peace legend."
Tiera Skovbye (Polly Cooper)
Tiera shared co-star Mädchen's post on her Instagram Story, writing: "My heart is heavy. Luke was such a special human."