Justin Bieber & Selena Gomez Split

It's a sad day for young love -- Justin Bieber and Selena Gomez have called it quits.

The Hollywood power couple quietly broke up roughly one week ago, a source told E! Online, which was first to report the news.

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"Because of their crazy schedules, it was getting harder and harder to maintain a relationship," the source said.

Additionally, a source for People said Selena was the one who initiated the breakup.

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"She broke up with him about a week ago," the source told the mag. "With them being apart so much it got complicated. She had some trust issues."

Adding, "It's not easy, but the relationship needed to end."

Justin, 18, and Selena, 20, first stepped out as a couple in February 2011, after months of keeping their relationship under wraps.

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During an October interview with Oprah (which will air November 25 on OWN), the Biebs said he always tried to make sure Selena felt comfortable and wanted.

"Sometimes... we gotta take the back exits and do different things, but I never make her separate from me, 'cause I don't want her to ever feel like I'm ashamed of her," he said. "I feel like a lot of guys do that, especially in the business. They don't want to be seen with the girl, so they'll make them ride in separate cars and do all that getaway stuff. [When] we get away, we're getting away together."

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However, at the 2012 Victoria's Secret Fashion Show in New York City on Wednesday night, the "As Long As You Love Me" singer (who performed at the famed lingerie show) told Access Hollywood he was finding himself distracted with the likes of Miranda Kerr, Adriana Lima and more lovely ladies strutting past him, while wearing nothing but strategically placed lace.

"I'm pretty focused. I'm like 98 percent focused," he told Access, before admitting, "Two percent focus is on the chicks."

And, when asked if he picked up any sexy Victoria's Secret garb for Selena, he quickly answered, ""No shopping for me. No."

VOTE: Are you surprised Justin & Selena broke up?

-- Erin O'Sullivan

Copyright 2012 by NBC Universal, Inc. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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