Olly Murs is a close friend of One Direction star Liam Payne and his girlfriend Cheryl, after appearing with both of them back on The X Factor in 2009.
However, the singer has said that, while he is unable to confirm if the current pregnancy rumours about Cheryl are true, she and Liam will make "fantastic parents" if they are going to have a baby.
The Wrapped Up hitmaker was seen at a charity event alongside Cheryl in London on Tuesday, alongside stories in a number of national newspapers that the former Girls Aloud star is pregnant.
Olly told the Press Association: "I don't speak to anyone about that sort of stuff. It's not my business, really.
"But, like I say, I'm not confirming, I'm not saying anything, it's not my business.
"I'm sure Liam and Cheryl will be fantastic parents, if they are having a baby, or not... I don't know."
A spokesman for the former X Factor judge said on Tuesday: "Cheryl will not be commenting."
Olly, who recently scored his fourth UK number one album with 24 Hrs, is gearing up to join the likes of The Who and Paul Weller to perform a special concert for Teenage Cancer Trust at London's Royal Albert Hall.
On how he became involved, he said: "I went to the event two, three years ago, and I got chatting to Roger Daltrey and a few of the organisers there, and Paul Weller, and we got talking about the charity.
"Over the years I've been to Teenage Cancer Trust units to see the teenagers and it really is incredible work they do, and they asked if I wanted to be involved.
"I said that I would love to do a gig, and we managed to get it in. I'm super, super excited to do it."
He added: "It's important as a performer to speak about it. Everyone in our life will be affected by cancer - whether that may be a close friend or family member - you always know someone who has been involved in cancer."
Olly said he is pleased to use his profile to help raise awareness of the charity.
"It's really tough. If we can, this charity helping these teenagers battle through that and help their families. It's an amazing thing to do," he said.
"You go up there to perform and put that passion into the music for the fans to really make sure they get behind it and support it."
The event was conceived and curated by The Who's frontman Roger Daltrey, who is an honorary patron of the charity.
Olly will perform on March 27, Paul will perform on March 31 and the Pet Shop Boys will take the stage on April 2, alongside former Smiths guitarist Johnny Marr and the Royal Philharmonic Concert Orchestra.
Next year's set of gigs marks 17 years of the charity shows at the iconic London venue.
More than 225 bands and artists have played for Teenage Cancer Trust at the Royal Albert Hall shows since 2000, raising more than £24 million for the cause.
Tickets for the shows go on sale on December 2.