Jennifer Lopez last week shared a mirror selfie on her Instagram account to flaunt her toned physique.

The picture taken in J Lo's home gym is now all over the news due to something her fans has spotted. 

A closer look into Jennifer's selfie shows a 'mysterious man' in the background with a hand over his mouth. 

As soon as the singer posted the selfie on Instagram, some eagle-eyed fans pointed out that there was a man in the background.

"Why is there a man in the background with a hand over his mouth?" one follower said. 

Another wrote, "What's that over her right shoulder?" 

Citing a source close to the singer, E News! reported that it was J Lo's boyfriend Alex Rodriguez who photo-bombed her selfie.

The portal reported that Alex was on a Zoom call when Jennifer Lopez took the selfie.