Zayn Malik has been accused of cheating on his now-fiancée Perrie Edwards.
A One Direction fan posted a video that appears to show Zayn and his best mate Anthony Riach skyping a girl and inviting her round at 3am.
Anthony tells the girl to get in a cab - he'll pay - and to bring a friend for his pal.
Shy Zayn won't reveal his identity to the girl, though his quaffed hair does make a brief appearance and he can be heard in the background.
Some fans are claiming the video was recorded last month while One Direction were touring Canada.
One Directioner is even alleging she is the girl on Skype in the recording.
But Zayn's friends insist the video was recorded before he started dating Little Mix singer Perrie.
A pal said last night: "Zayn would never cheat on Perrie now - he’s put an engagement ring on her finger to show her that.
"He’s said the only thing he uses Skype for these days is to talk to pals and her."
Zayn, 20, was accused of cheating on Perrie at the beginning of the year with Australian waitress Courtney Webb.
Courtney snapped Zayn asleep in bed - his tattoos clearly visible - after their night of alleged passion.
But Perrie, 20, forgave her man and he got down on one knee earlier this month.
It's thought Zayn's fans are falsely accusing him of cheating because they're bitter about his blossoming relationship with Perrie.
In a recent interview, Zayn revealed how he and Perrie manage to keep the romance alive.
He's currently in the middle of the band's Take Me Home world tour, while Perrie is also busy travelling the world with Little Mix.
Zayn told Metro: "We miss each other. We've got Skype as well. That helps."
His cheeky band mate Liam Payne joked: "I don't want to know what you're doing in your personal time."
Zayn and Perrie met backstage recording The X Factor charity single in 2011 and announced their engagement the day after 1D's This Is Us movie premiere.
Perrie debuted her sparkler on the red carpet, but refused to confirm any rumours until her fiancé's big night was over.
In fact, it was actually her mum who revealed the pair were engaged.
Debbie Duff told Real Radio the following day: "It's wonderful because Zayn is absolutely gorgeous. It's true they got engaged on Sunday and it's absolutely lovely.
"Perrie loves him to pieces and it's perfect. They get on so well together and understand each other. It's just fabulous."
But Debbie revealed her daughter and the 1D heartthrob haven't yet set a wedding date.
She continued: "I said how long’s this gonna be? And she said ‘I don’t want a long engagement but I don’t want a quick one either’.
"I think they’ll eventually get together and set the date.
"He did the traditional asking me, and then he asked his mum and dad. It was fabulous, it was lovely. I was like a little marshmallow - it was so lovely."