The 'Impossible' singer has been told by managers to rein himself in after being allowed to "lap up the attention" from females in the wake of his victory last month.
"His bosses understand he's going to lap up the attention," a source told OK. "But they don't want him getting a reputation as a womaniser."
Arthur has been linked to a string of beauties, including Xtra Factor host Caroline Flack and Made in Chelsea star Kimberley Garner, since finding fame on The X Factor.
Left: James Arthur on a date with Kimberley Garner, Right: James Arthur being interviewed by Caroline Flack
The musician has revealed that he plans on hiring a personal trainer in order to achieve a "washboard stomach".
"Of course I would get [my body] out," he said. "But at the moment I find it too weird - it's just confidence."
Arthur yesterday (January 6) claimed a third week at number one with his X Factor winner's single 'Impossible', which is on the verge of selling one million copies.