The former Girls Aloud singer currently lives in Los Angeles so she told Attitude magazine she was out of the loop when it came to the gossip on who Chez was dating.
So much so, that when she learned about the marriage she had no idea who Cheryl's husband Jean-Bernard Fernandez-Versini was because she thought Cheryl was still with her ex-boyfriend.
Nadine said: "I didn't even know [about the wedding] bcause you don't get any of the press in LA. I had a friend tell me and I thought it was the boyfriend that I had met a while back, and I was like, 'Oh my God' but then it's this new guy, so I thought she must be having a ball.
"If you meet somebody and think, 'Yes that's it, I'm going to do it, I'm going to get married' she must be having a ball."
Nadine tweeted Cheryl after learning of the wedding news to offer her congratulations – and urge Cheryl to join the baby club soon!
Northern Irish singer Nadine became a mum back in February when she welcomed daughter Anaiya with boyfriend Jason Bell.
As for Nadine, will we hear wedding bells soon?
She told the mag that Jason would have married her ages ago if he'd had his way but for now she's happy with how their relationship is going, preferring to focus on their baby and her sister's upcoming nuptials.
Nadine's interview is in the current issue of Attitude, available now
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