The promo for I Found You shows the boyband stars embroiled in a brawl, and Parker took a blow to the face while filming the fight scene.
His bandmate Jay MCGuiness reveals they were all convinced Parker was faking his injury until a doctor diagnosed him with a hairline fracture.
MCGuiness tells Britain's Metro newspaper, "Tom took a bit of hefty whack to the nose. We thought he was making it up but it turned out he got a hairline fracture. They couldn't do anything about it."