Liam Payne plans to serenade his lady-love, Naomi Campbell, at her 49th birthday in May - and he could even pen a special song just for her.
The two lovebirds, who started secretly dating towards the end of last year, want to go official within the next few weeks and surprise their friends with a performance from Liam at her bash.
Naomi, who has kept coy about her romance with the One Direction singer, has already booked out a posh suite at the luxury Claridge's hotel in London, as well as a room in Cannes where they'll head for the film festival - the very same event where he and Cheryl cemented their relationship in 2016.
Liam Payne and Cheryl celebrate their son Bear turning two
"This is a big step for them. It is like she is coming out with the romance," a source told the Sun. "There is even talk Liam might write a song for her.
"A lot of her friends thought the relationship might fizzle out – but the opposite seems to be happening. They are getting closer and their feelings are deepening."
The insider added: "Naomi has kept him hidden away before but he is at the centre of her birthday plans."
Cheryl 'plans family holiday with Liam Payne' as Naomi Campbell romance heats up
It'll be the couple's first official joint appearance since insisting on being photographed separately at various events, including the BAFTA Awards and a Vogue party.
But Mirror Online got Liam Payne and Naomi Campbell pictured TOGETHER for first time when the pair attended the same Formula 1 event in Hong Kong earlier this month.
Naomi and Liam, who share a 23-year age gap, have gone to great lengths to avoid being papped together or even talk about each other.
Liam Payne and Naomi Campbell refuse to be pictured together in identical outfits
During her appearance on The Jonathan Ross Show, the supermodel told the host she would "never discuss her personal life" when quizzed about the Liam rumours, adding: "And? I never discuss my personal life. Another name?"
Jonathan then mentioned Canadian rapper Drake, to which she replied: "I never discuss my personal life.
"I mean, it's crazy it's like one day it's one person, the next day it's another. Who is tomorrow? That's what I want to know...
"For me, I laugh. The stories are incredible, it's humorous... I just get on with my life."
Liam Payne and Naomi Campbell pictured TOGETHER for first time
Fans noticed sparks flying between Liam and Naomi after he left a string of flirty messages on her Instagram posts, including "perfection in a person" and "don't give me those eyes" on one of her selfies.
But it turns out the pair were already hooking up by the time they came to swap messages, as they were spotted on a secret dinner date in Ghana in December.
They spent New Year together in the African nation, dancing at a beach party until dawn, and were seen dining together a few days later.
And in January, they were spotted leaving a Davido Adeleke gig at London's O2 - although they left flanked by security to deflect those pesky cameras.
They then attended a Vogue party after the BAFTA Awards in February , but left separately within minutes of each other to put witnesses off the scent.
