Deryck Whibleyis opening up about the abusive experiences he allegedly faced at the hands ofSum 41s first manager.

As I started getting into thebook, I felt like, How could I not be honest?'

Inside the restroom, Nori grabbed his face and passionately kissed him, Whibley writes in the book.

Deryck Whibley Accuses Former Sum 41 Manager of Sexual Abuse in New Book

Deryck Whibley of Sum 41 on Jan. 13, 2024, in Anaheim, California.Rich Polk/Getty Images for iHeartRadio

The band fired him in 2005, and Whibley says he hadnt spoken to him since.

In the book, he writes that Lavigne exclaimed Thats abuse!

when he confided in her, and said, He sexually abused you.

I went through a long period of my time where I didnt think about it anymore.

I came to realize it was self-defense, he tellsRolling Stone.

I didnt want to have victim issues.

Whibley says he doesnt call what he went through abuse in the book.

Im dealing with it for the first time, and I dont know what I think about it.

He adds, I always called it some shitty thing I went through.

He also told theTimesNori tried to keep his and his bandmates parents away from the band.

Now it makes more sense.

Because he was the same age as our parents, and we didnt know that at the time.

He knew they would get suspicious of the way things were running, he told theTimes.

Its going to hurt your career.

I saw her bravery in that, and that inspired me, Whibley says.

I became a different person where I felt the importance to just be open.

When I started writing, I told myself, Dont take a stab at make yourself sound cool.

Just fucking write the true story.

And I never stopped.

It all just came out.