Justin Bieber reckons his new track 'Boyfriend' is the "perfect single".

The Canadian star released the track yesterday (March 26) after weeks of build up.

Speaking to On Air With Ryan Seacrest, Bieber admitted that he found it tough to pick his first single - but he feels like he has made the right choice. He said:

"It was a really hard choice. We had so many songs, so many up-tempos we could have released, and I thought we should slow it down a little bit. I feel like every single that's dropping is [fast] and you can only take so much of that, so I wanted to do something a little different, slow it down."

He continued: "It's just something a little bit more mature but also something I think I'm ready for. I thought this was the perfect single, so that is why it was my first single."

Listen to Justin Bieber's 'Boyfriend' below: