The 'Scream & Shout' hitmaker was surprised to learn his friend - who he has collaborated with several times since 2008 and managed until last October - had tied the knot with Jean-Bernard Fernandez-Versini in a secret ceremony in July but was very happy to hear the news.
Asked his thoughts on Cheryl's marriage, he told MailOnline: ''She got married already? Oh I didn't even know that!
That's cool! I'm happy for her, that's dope.''
Meanwhile, the Black Eyed Peas star insisted he never relaxes because modern technology means he can work wherever he is in the world.
He said: ''I don't hang out. I could write songs anywhere, especially with these [electronic] tools available now.
''F**k relaxing what else is there to do? I just like to always work, from one thing to the next thing.''
Cheryl's former Girls Aloud bandmate Nadine Coyle - who lives in Los Angeles with fiance Jason Bell and six-month-old daughter Anaiya - recently admitted she heard about the 'X Factor' star's recent marriage from a friend.
She said: ''I suppose Cheryl heard about the baby like everyone else.
''She sent a congratulations email. 'It's amazing you're going to be a mummy ...', that sort of stuff. She didn't tell me about her wedding.
''I heard from one of my best friends who came to LA from the UK.
''He said, 'Cheryl got married. Did you see?' He had an English newspaper with him and I thought, 'God, no way!' ''
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