Viral World Cup clip of apparent lovers' spat has social media searching for answers.

What should have been a day of football celebrations has instead sparked a global guessing game after footage of an apparent disagreement between a South African couple at the FIFA World Cup spread rapidly across social media.

The now-viral clip has amassed millions of views across platforms including TikTok and X, with viewers attempting to work out what may have triggered the apparent dispute.

The footage shows a group of South African supporters proudly dressed in national team colours, waving flags and cheering from the stands during South Africa's match against South Korea in Monterrey, Mexico.

The atmosphere appears festive until a woman seated beside a man believed to be her partner turns towards him while he is looking down at his mobile phone.