Alan Thicke's 19-year-old son, Carter Thicke, is opening up about his final moments with his beloved father.

In an exclusive interview with ET, Carter speaks out for the first time since the Growing Pains star's shocking death. Carter was playing hockey with his dad at the Pickwick Gardens ice skating rink in Burbank, California, on Dec. 13, when Alan collapsed at the rink. He later died at the hospital.

"The ambulance came and the paramedics had stabilized him and everything seemed fine," Carter tells ET special correspondent Keltie Knight about initially thinking his dad would pull through once they got to the hospital.

WATCH: EXCLUSIVE -- Alan Thicke Told Son to Snap Photo as EMTs Took Him to Hospital -- 'Take a Shot, Kiddo'

"I got to give him a hug and said, 'I love you,' and that was the last time I saw him," he adds.

Carter couldn't help but gush about his father, sharing nothing but countless fond memories with ET.

"He was like the perfect dad," he says.

In addition to Carter, Alan is survived by his wife, Tanya, and older sons Brennan and Robin from his marriage to Gloria Loring.

Tune in to Entertainment Tonight on Thursday for more of Carter's emotional interview, where he opens up about life after his tragic loss, the hardest moment of his father's funeral and his father's final words to him.

WATCH: Robin Thicke Remembers Late Father Alan Thicke as 'The Greatest Man I Have Ever Met'

Watch the video for more on the legendary TV actor's star-studded memorial at his ranch in Carpinteria, California, last month -- which was hosted by Robin -- that had Leonardo DiCaprio, Bob Saget, Bill Maher, Alex Trebek and the entire cast of Growing Pains in attendance.