On Friday (March 7), MGK took to social media to pen a tribute to his friend, an Australian snowboarder named Luke "The Dingo" Trembath, who passed away in February.
"i didn't even cry this hard when my dad died. 💔😞🕊️ i've lost a lot of friends, but i've never lost a brother," he wrote.
MGK continued, saying that it was "one of the hardest phone calls" to tell his daughter Cassie that Luke had passed.
"She loved you so much," he wrote. "and i'll never forget when she was too young to understand your name was Dingo so she called you Ping Pong."
He continued, writing, "i feel like your up there with my new child, dressed up in a hilarious costume making them laugh, getting ready to send them down. i couldn't ask for a more bittersweet birth blessing."