The 19-year-old pop star revealed his true feelings during an interview with LA radio station, Power 106, and also confirmed that his latest track 'All That Matters' was written with Selena in mind.
Speaking about the meaning behind 'All That Matters', Justin explained: "It was written when I was in a great place in my relationship and she was all that mattered to me."
He then added that the relationship he was referring to, was indeed the one he had with his famous former flame.
"This is true. It really was [with Selena]," he said.
The video for 'All That Matters' is Justin's steamiest yet and shows him getting up close and personal with hot blonde model, Cailin Russo.
However, it seems there is still only one girl on his mind.
Justin, 19, went on to say that his split with Selena left him genuinely heartbroken and although the ex-couple are not talking right now, he still loves her.
"I wrote the best music once my heart was broken, for real," he continued."[The break up] affected us, especially when we are in front of so many people. It's such a public thing. It's just hard for the both of us.
"But you know, she's a great woman. I love her to this day. I think we're going to be the greatest of friends. Right now we're taking a little time and not talking."
Selena and Justin broke up last December, but were since pictured together a handful of times, sparking rumours that they had reunited.
However, actress and pop star Selena swiftly denied reports that she and her chart-topping beau were back on - even though they were caught kissing backstage at the Billboard Awards in May!
Maybe they could rekindle their flame in the future?
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Watch the steamy 'All That Matters' video below.
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