Deryck Whibley of Sum 41 Marries Ariana Cooper

After getting through a tough year together, Deryck Whibley and Ariana Cooper tied the knot in a beautiful ceremony Sunday in Los Angeles, multiple sources confirm to PEOPLE.

Sum 41's Deryck Whibley, a Year After Alcohol Overdose: 'I'm in the Best Shape of My Life'

Nearly a year after Deryck Whibley almost killed himself from drinking too much alcohol, the Sum 41 lead vocalist now says he’s “in the best shape” of his life and realizes “there’s this whole world out there.”

Deryck Whibley Posts New Photo, Promises to Be 'Back out on Stage Before You Know It'

Deryck Whibley is on the mend.

A week after posting disturbing photos of himself in the hospital and writing that “hard boozing finally caught up to me,” the Sum 41 rocker, 34, seems to be healing well.

Deryck Whibley Steps Out Appearing Frail After Nearly Dying from Alcohol

Deryck Whibley made his first public appearance since nearly dying from drinking too much alcohol.

The 34-year-old Canadian rocker was photographed looking frail while walking around Los Angeles on Monday with the help of his fianceé Jocelyn Aguilar and an unidentified woman – just days after revealing the battle with alcoholism that landed him in intensive care.

Deryck Whibley: If I Have One More Drink I Will Die

Avril Lavigne’s ex-husband, Deryck Whibley, has gone public about his battle with alcohol addiction in a candid post on his website that prompted Lavigne to Tweet her support.

The Sum 41 singer warned fans about the dangers of drinking in a post titled “Rock Bottom” on Friday that was accompanied by some shocking photos.

Avril Lavigne & Deryck Whibley's Close (and Friendly!) Encounter in L.A.

Avril Lavigne had some special support at a party to launch her Abbey Dawn accessories line in L.A.: her ex-husband, Deryck Whibley!

The Sum41 rocker came out to the JustFabulous party at the Viper Room, and even shared a hug with Lavigne, who reportedly split from her boyfriend Brody Jenner in January. Whibley also posed for pictures at the event and congratulated Lavigne on her hard work.

Sum 41 Cancels Tour While Deryck Whibley Recovers from Attack

Deryck Whibley, still recovering from injuries after being attacked in Japan, and his bandmates have decided to cancel their spot on the Vans Warped Tour this week so he can fully recover.

“Knowing that they are unable to deliver their signature high energy show, Sum 41 made the tough decision that a break is needed while Deryck begins rehabilitation for the slipped disc,” the group said in a statement Wednesday.

Deryck Whibley Attacked in Japan

It’s been a bumpy ride for Deryck Whibley.

The Sum 41 rocker, whose ex Avril Lavigne filed for divorce last year, was apparently attacked at a bar in Japan Thursday and sent to the hospital.

Avril Lavigne: Ex-Husband One of My Best Friends

Avril Lavigne says she still has a relationship with her ex-husband Deryck Whibley – a working relationship.

The 25-year-old singer, who is a guest judge on this season’s American Idol, and the frontman of Sum 41, filed for divorce in October after more than three years of marriage.

Newly Single Deryck Whibley Hits Vegas

Less than a month after amicably splitting from wife Avril Lavigne, Deryck Whibley hit the town in Las Vegas Friday night.

The Sum 41 singer celebrated the 20th anniversary of The Mirage where he was spotted getting close with a new woman – model/designer Hanna Beth Merjos.