Liam Payne, 25, reportedly sent flirty text messages to a model amid his mind-blowing romance with Naomi Campbell, 48.
The former One Direction singer is said to have paid a compliment to the woman, also 25, over social media.
A source told The Mirror: 'Liam was very flirty with the woman – and she was flattered.'
They continued: 'He sent some very suggestive messages. So she was shocked to later read he was dating Naomi.'
The insider also claimed the former X Factor star asked the model what she did to get to sleep at night, but have since stopped messaging each other.
MailOnline has contacted Liam's representatives for further comment.
The reports came after the belter and supermodel Naomi spent a romantic Valentine’s Day together as their relationship ‘hots up.’
Bedroom Floor hitmaker Liam flew to New York from London in time to spend the special day and night with the catwalk queen, as The Sun reported that she 'warned' the Wolverhampton native 'not to get too clingy.'
A source told the publication: 'Naomi has told Liam she is enjoying having fun but that is all she is ready for at the moment. She has said she’s found him a bit too clingy and full-on and does not want a committed relationship at this stage.'
They continued: 'He accepted it but was a bit crushed. He is in awe of her and is finding it tough that she is so strong-willed and the one in control.
'Liam seems to be a bit of a puppy dog around her and friends have warned him the situation is a car crash waiting to happen.'
MailOnline contacted representatives for Liam and Naomi for comment at the time of publication.
Rumours of the pair’s fledging relationship have been circulating the showbusiness circuit since Liam flirted on a snap posted to Naomi’s Instagram account, commenting: ‘Perfection in a person...don’t give me those eyes.’
The catwalk queen then wrote alongside a shirtless picture of Liam, ‘Beautiful soul,’ to which he replied: ‘Takes one to know one,’ and added a kiss emoji.
They were later seen together at London’s O2 Arena where they were trying to stay under the radar during afrobeat artist Davido's concert. Soon after it emerged that they were enjoying a ‘mind-blowing’ time together, with one friend claiming: ‘Liam thinks she’s amazing and beautiful.’
© Associated Newspapers Ltd.