The 'Little Things' stars are said to have been left to rough it overnight in a "back to basics" style challenge.
One Direction Post Valentine's Day Message To Fans - Video
The 'Gotta Be You' stars get into the romantic spirit in the new clip.
One Direction have today (14th February) posted a new video wishing their fans a happy Valentine's Day.
Niall, Liam, Zayn, Harry and Louis can be seen with their arms around each other as they deliver their romantic well wishes.
"We want to wish all our fans a very happy Valentine's Day – we love you," says Louis.
The group are currently in Paris and have been tweeting messages from the French capital.
Earlier today, Niall tweeted: "bonjour paris! just having breakfast ! get workin soon! busy day today! lets go #1DinParis ."
Meanwhile, the band will embark on their debut US tour at the end of this month in support of fellow boy band Big Time Rush.
You can watch One Direction's Valentine's Day message below:
Latest One Direction
The 'Live While We're Young' stars talk about taking inspiration from the man band.
One Direction have announced their first ever stadium tour, so to celebrate we've been looking at the things that could happen when Harry, Niall, Louis, Liam and Zayn take to the stage at their biggest ever shows next year.
The 'Kiss You' five-piece are back with a revealing music video for their new charity single.