Naya Rivera’s ex Ryan Dorsey is sharing details about the Glee star’s final moments before she died in 2020.

In his first sit-down interview since Rivera’s death, the actor opened up to People magazine about how their son Josey, now 9, continues to hold guilt over not being able to save the actress, who drowned while she and her then 4-year-old son were swimming in Lake Piru in Ventura County, California.

“Something he’s said over and over is that he was trying to find a life raft, and there was a rope, but there was a big spider on the rope, and he was too scared to throw it,” Dorsey said. “I keep reassuring him, ‘Buddy, that rope wasn’t going to be long enough.’”

Josey also revealed that because it was windy that day, he was worried about getting into the water. But Rivera assured him and told him, “Don’t be silly!”

When Rivera noticed the boat began drifting, given it wasn’t equipped with an anchor or flotation devices — a wrongful death lawsuit filed on behalf of Josey against Ventura County was settled in 2022 — she instructed her son to swim back to the boat.

According to Dorsey, the 9-year-old remembers swimming back to “the tanks” and pulling himself “around the boat.” (The incident report said Rivera exhausted herself getting Josey back on the boat and drowned.)

“He said that the last thing she said was his name, and then she went under, and he didn’t see her anymore,” Dorsey said. “It just rocks my world that he had to witness her last moments.”

Rivera, who played Santana Lopez on the Fox musical series Glee, was declared dead at the age of 33 after her body was found five days later.

The late star had rented a boat and went for an excursion with her son on July 8, 2020. When the rental boat wasn’t returned at the deadline, employees operating the rental stand went out to look for them, and that’s when they found her son alone in the boat. Authorities initiated a search for Rivera led by a team of divers believing she drowned in a “tragic accident.”

Rivera’s son was reported to be unharmed. He also reportedly told investigators that he and his mother had been swimming in the lake, and though he got back in the boat, she did not.

Dorsey also revealed that he was in a Ralph’s supermarket in Big Bear Lake, California, when he learned Rivera was missing after being called by Rivera’s family. “I collapsed into a pallet of drinks,” Dorsey said. “I feared the worst.”

He also said that while driving to Lake Piru he, “drove 100-and-­something the whole way with my four-way hazards on, chain-smoking cigarettes — and I don’t even smoke, really — and just crying.

“I just wanted to get to Josey,” he said. “If we’d have lost both Naya and Josey, I don’t know how I would continue on with my life. I don’t know what I would’ve done, but I’m sure it wouldn’t have been good.”

In one of her last social media posts shared days before her death, Rivera posted a photo of herself and Josey writing, “Just the two of us.”