Justin Bieber and Selena Gomez have called it quits after two years, reports Radar Online. Considering that the 18-year-old Bieber was seen out with a Victoria's Secret model on Thursday, the news isn't exactly a shocker. The split apparently happened last week. "Because of their crazy schedules, it was getting harder and harder to maintain a relationship," a source tells E!. The AP even weighs in with confirmation, citing an anonymous source of its own. Click for more.