He told The Sun: "There's one song that is basically phone call that happened between me and her when she was about to let it go".
She said that being a mum had changed her life completely "in the most unbelievable way", and hasn't ruled out having more children.
'Cheryl and Simon spoke about her going back next year. "I'm thinking about it, but I just want more time with Bear at the moment".
Meanwhile, Cheryl recently admitted she disliked being pregnant, but insisted the past six months of motherhood have been "amazing". "It's so lovely. And I grew up with siblings".
Despite admitting that she "hated being pregnant", Cheryl, who looked happier than ever, said: "I've had the best six months of my life". Really. I hated being pregnant. Cheryl and Liam confirmed their romance in February 2016. And I feel actually better coming back.
DE wants its HQ2 pitch to attract all businesses, not just Amazon
They suggested that when members of the public talk about the project on social media, they use the hashtag #AMAZONHQ2CLE. Seventy-three community groups from cities across the USA have signed onto a "wish list" for Amazon in an open letter .
However, when asked about the prospect herself, Cheryl replied: 'I have no plans for two at the moment but I think maybe one day. "And the midwife always used to come in when he was little - he used to, like, grunt - and used to go, "There's the little bear, there's the little bear", Cheryl laughed.
"['Bedroom Floor' is] about a torrid relationship where you're torn - you're not in or out but you always end up with your clothes on the bedroom floor", Liam explained.
Revealing that her life as a mother has been "perfect", she told the British outlet, "It's been actually over a year but it's been ideal for me because it's reset the mind-frame". "And it stuck. It's just his name and I wanted a unique name".