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Twenty-five years ago today, disco sensation and teen idol Andy Gibb died of heart failure at the age of 30.

While he was the youngest brother in the Gibb family, Andy was never an actual "Bee Gee."

He was best known for his No. 1 single "I Just Want to Be Your Everything," written by Barry Gibb.

Andy had other hits including "(Love Is) Thicker than Water," "Shadow Dancing," "Time Is Time" and "Me (Without You)."

However through the years, he struggled with alcohol and drugs - and relationships.

In the early '80s, Andy and actress Victoria Principal were in a tumultuous two-year relationship.

"I just fell apart and didn't care about anything. I started to do cocaine around the clock - about $1,000 a day," he told People magazine at the time.

PHOTOS: Bee Gees Through the Years

His family supported him financially and emotionally, encouraging him to go to the Betty Ford clinic in 1985.

The Bee Gees later recorded "Wish You Were Here" in memory of Andy.

Maurice Gibb told Larry King in 2002 that their father, Hugh Gibb, "literally died when Andy died."

It was a "guilt thing," according to Robin Gibb, who told King that his father was "very bitter for three years" after Andy's death. Hugh Gibb died in 1992.

In 1997, the Gibb brothers paid tribute to Andy at MGM Grand in Las Vegas.

Gibb Family Heartbreak

Andy Gibb's 1988 death wasn't the only heartbreak the family had to endure.

The Brother's Gibb, as they were sometimes called, began to sing in harmonization and write songs together as young boys in England. But over their 50-year career they have seen their share of solo adventures, career slumps, suffered through the disco backlash, been the punch line of jokes and endured personal loss.

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Robin Gibb was the lead singer of the Bee Gees but Barry Gibb's signature falsetto sound on songs like "Nights on Broadway" dominated the group during their glory days.

The group had exceptional success in the late 1960s and 70s, becoming a disco sensation with blockbuster hits "Stayin' Alive" and "Night Fever."

Robin Gibb died on May 20, 2012, at age 62.

Robin's twin, Maurice, the third member of the Bee Gees, died in 2003, during surgery to treat a twisted bowel, a congenital condition.

Barry Gibb, now 66, is the enduring face of the Bee Gees. He not only penned songs for the group but wrote platinum-selling hits for Dionne Warwick, Kenny Rogers, Dolly Parton and Barbra Streisand.