Unless you're in Dubai.
Ayman Najafi, 24, a marketing consultant who lives in Dubai, and Charlotte Adams, 25, an estate agent from North London, were said to have been touching each other and kissing passionately as they dined with friends in a beachfront restaurant.
They were arrested and sentenced to a month in prison after which they were told they would be deported.
But the pair told a hearing at the Dubai Appeal Court yesterday that they were the victims of a "huge misunderstanding" and had simply exchanged a friendly greeting.
"We kissed each other on the cheek as a greeting, nothing more,” Mr Najafi told Judge Aysar Fouad. Miss Adams pointed at her cheek to show where contact had taken place.