Talk about the ultimate betrayal!

Ryan Reynolds recently revealed that he ended a 25-year friendship with one of his very best friends after he found out that he was trying to sell baby photos of his nine-month-old daughter, James.

RELATED: Blake Lively Breastfeeds Daughter James in New Instagram Photo!

"A guy that I’d known for my whole life, one of my closest friends growing up, he had been shopping pictures of my baby around," he told GQ. "I kind of got in front of it, which is good. But it was a slightly dark period. A bad couple of weeks."

blake lively ryan reynolds

"[It was] somebody I’ve known, who’s been one of my closest friends, for 25 years," he explained. "It was like a death. It was like one of those devastating things to find out."

The 38-year-old said that once he and his wife Blake Lively, 28, discovered who had been trying to sell the photos, he approached his friend almost immediately.

"It was a pretty strongly worded conversation," Ryan said. "[He did it] just for money. I mean, I don’t think he thought he would ever be caught. But it’s a pretty narrow group of people that I would send photos like that to. They’re just, like, my closest family and my closest friends: ‘Here’s us in the delivery room!'"

Unfortunately, there was no hope for reconciliation.

"There isn’t really a conversation to have. It’s just, ‘Oh, well, now I’m never going to see you or talk to you again, unfortunately.’ That’s kind of how it worked out," he said.