Justin Bieber gets teary in his Believe documentary, and he also got rather emotional when he sat down with the folks at Power 106 in Los Angeles earlier this week!

The 19-year-old singer introduced his hit song "All That Matters" on the radio show, and he confirmed that it was about former flame Selena Gomez. "It was written when I was in a great place in my relationship and at that time she was all that mattered," he said. When asked if it was with "SG" Bieber replied, "It really was," adding that he was very much in love with her.

Then the pop superstar said, "I wrote the best music when my heart was broken," but he quickly added, "It affected us, especially when we are in front of so many people -- it's such a public thing -- it's hard for the both of us. But you know, she's a great woman, I love her to this day."

When asked if they still keep in touch, Biebs said, "I think we're going to be the greatest of friends ... right now we're taking a little time." Hmm, wonder how she feels about that?!