The pair went public with the relationship in February last year (11) when they attended the Vanity Fair Oscars party together but they have allegedly called it quits.
The couple reportedly parted ways last week (beg29Oct12) and Bieber was spotted attending Broadway show The Lion King on Friday (09Nov12) without Gomez.
Bieber and Gomez's hectic work schedules are blamed for the reported the split. A source tells E! Online, "Because of their crazy schedules, it was getting harder and harder to maintain a relationship."