Katy Perry and Orlando Bloom are in the middle of a a very public split—even though the stars have yet to confirm the news. And, as with any celebrity breakup, there's been plenty of speculation as to what might have caused the couple to call it quits.

A source tells PEOPLE that Katy Perry "never saw herself as a single mom" amid her split from fiancé Orlando Bloom. The insider also notes that the singer is "still doing great."

Katy Perry cried on stage following her split from Orlando Bloom, becoming visibly emotional as she introduced 'Firework' at the conclusion of a concert in Adelaide, Australia.