Arjun posted a video on Instagram on Sunday, where the couple are seen doing aqua cycling.
"When the girlfriend is a tougher task master than your trainer... See @drewnealpt I`m working out even on holiday in the @patinamaldives pool thanks to @malaikaaroraofficial !!!," he wrote as the caption for the image, which in just 10 minutes got over 7,000 likes.
Arjun and Malaika have been dating for a while. The two have been pictured several times at various events.
On the work front, Arjun currently has three films lined up - 'Ek Villain Returns', 'Kuttey' and 'The Lady Killer'.