If you weren't already hopelessly in love with Leonardo DiCaprio, here's your 487th reason you should be.
"Alan was a devoted father, husband, friend and role model. He knew how to harness the power of the entertainment industry to be a positive influence in so many lives—including mine," he wrote. "I will be forever grateful for the opportunity I had to work with Alan early in my career. He had tremendous class, a huge heart, and he taught me and so many others the valuable lessons about humility and gratitude. I've seen him a number of times over the years and when Alan Thicke walked in the room, quite frankly, no one was cooler. I miss him already—my thoughts and prayers are with the entire Thicke family during this difficult time," he concluded.
VIDEO: Leonardo DiCaprio & President Obama Talk Climate Change
DiCaprio played Luke Brower on the beloved sitcom, a homeless teen taken in by the Seaver family. A few more of the Seaver family members paid tribute to the late Growing Pains actor, including Kirk Cameron (Mike Seaver) who posted a photo from the show on Instagram, Joanna Kerns (Maggie Seaver), who tweeted out a few messages dedicated to Thicke, and Ashley Johnson (Chrissy Seaver), who also tweeted (and later deleted) a photo of her and the actor together on set.
I spent Monday through Friday for seven important years with Alan Thicke as my "TV dad." I'm shocked and truly heartbroken today at the news of his death. Alan was a generous, kind and loving man. I am so blessed to have grown up with him. Chelsea and I send our love and prayers to his family tonight. We will cherish the memories... "sharing the laughter and love."
According to Entertainment Tonight, Johnson's now-deleted post featured a throwback photo of her and Thicke, with a quote from Washington Irving reading, "There is a sacredness in tears...They are the messengers of overwhelming grief, of deep contrition, and of unspeakable love."
Our thoughts are with the Thicke family during this time.