Will.i.am says he doesn't have time for relationships.

The 'Scream and Shout' hitmaker admits that his jet-setting career means he has to give up on love for the time being.

"I don’t have time for girlfriends," he said. "And that’s why I just keep busy, I keep going because that’s what I want to do."

The 39-year-old -- whose real name is William Adams -- credits his ex for making things happen for him, despite the pair splitting up on the phone after nine years together.

He explained: "Back in 1998, I said to my ex girlfriend, 'I’m just going on tour for a couple of months.' And I never came back. We were together for nine years, and we had to break up over the phone. It’s not always easy but it is what it is.

"She was the one who helped all of this happen, we stayed in touch as friends. The (Black Eyed Peas) track 'Heartbreaker' is about her.

"I moved out of my mom’s house and straight in with her. She was the girl who looked after me, and without her the Black Eyed Peas wouldn’t have happened."

Despite not having time for love, will.i.am admits that he prefers to keep busy.

He told Notebook magazine: "I don’t really like chilling out. I could easily schedule my calendar so I don’t have to work so much, but I keep it packed because I like working hard ...

"The only time I’m on my own is when I’m travelling to the next place on a plane or occasionally on a day off. It’s fine, it’s work."