WESTLAKE VILLAGE (CBSLA.com) — A childhood friend of Elliot Rodger said he was shocked when he found out the 22-year-old was the person behind the Isla Vista shooting and stabbing massacre.

COMPLETE COVERAGE: Isla Vista Rampage

READ MORE: Angels Games Saturday And Sunday Postponed Due To Positive COVID-19 Tests On The Twins Roster

“I like, flipped out, I went crazy,” Lucky Radley said. “Speechless.”

Radley said he was even more shocked when he saw his name in a 137-page manifesto Rodger wrote about his tortured life.

Speaking of a group of kids his stepmother wanted him to be friends with, Rodger wrote, “One of them was a black boy named Lucky Radley, who I thought was very nice at the time. He was a fourth-grader and he would later go to the same middle school as me, where he would become an object of my extreme jealously and hatred. Looking back, I can’t believe I actually played with him as a friend in my father’s neighborhood.”

Rodger wrote about Radley’s arrival at his middle school years later: “He immediately became popular with the pretty girls of his grade. I hated him for it.”

READ MORE: Kroger Closing Ralph's And Food 4 Less In Long Beach Saturday Over Hero Pay Law

“I mean, I didn’t even know I was popular with the girls. I was just friendly to everybody,” Radley said.

Radley described the Rodger he knew as a smart loner who never looked him in the eye and had very little to say.

“He would have one-word answers. I never really heard him speak,” he said.

Radley said he couldn’t believe what Rodger said in his YouTube videos, where he described his plans for bloodshed.

MORE NEWS: LA County’s COVID Positivity Rate Hits Record Low; 600K Vaccine Doses Available Next Week

“I didn’t know who that was. The guy that I knew wouldn’t say a word,” he said. “I can’t wrap my mind around it. It’s tough, it’s tough.”