Bieber and the British boyband have been rumoured to be teaming up for either of their next albums.
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The singer revealed that while they have yet to get together for a duet, he is still very much up for the idea.
He told BBC Radio 2: "They're my boys. They came to my house, we hung out. I have a pool so we all went in and chilled out.
"If they want me on their album, they just have to ask. They're talented."
One Direction are tipped to release their second studio album in November.
Bieber's next LP Believe will be released in the UK on June 18 and is available to pre-order at Amazon now.
Watch the video for Bieber's 'Boyfriend' below:
