Danny Jones' wife is thought to have made a "marriage pledge" after the married McFly singer snogged Love Island's Maura Higgins.
The musician met Maura during this year's season of I'm A Celebrity on ITV and has seemingly kept in touch since leaving the jungle.
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Shakey footage filmed at Universal Music's BRIT Awards afterparty last Saturday showed the pair enjoying each other's company.
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At one point, the two were seen kissing while appearing to wait in a queue, even though Danny's been married for over a decade.
It was a "slap in the face" for his spouse Georgia Horsley, according to a source close to the couple who claims Danny "regrets" it.
"She's been an incredible partner to him so this feels very unfair. But Georgia is a strong woman, she won't let it ruin what they have," they said of Georgia.
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Speaking to the Mirror, they added: "Danny and Maura insist it was totally innocent and nothing meaningful.
"They got on really well in the jungle and it's just foolish that they let themselves get caught up in something after a big party night, especially so publicly."
Danny and Georgia tied the knot in 2014 after first meeting in 2009 at a Miss London event – the pair share son Cooper, aged 7, together too.
Neither Danny or Maura have yet publicly addressed packing on the PDA, with Georgia cancelling an appearance this weekend.
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