By Jen Heger - Breaking Celebrity News Assistant Managing Editor

Jennifer Lopez is on the verge of breaking up with her back-up dancer boy toy, Casper Smart, because the 43-year-old mother-of-two has come to the realization that she really doesn't have a lot in common with the 24-year-old, and is beginning to feel like his babysitter, Breaking Celebrity News is exclusively reporting.

"Jen is currently on tour with Enrique Iglesias, and Casper is the head choreographer of her show in which he also dances. It's tough being on the road -- this isn't Jen's first tour and she has been feeling more like Casper's babysitter than girlfriend. Casper likes to hang out and party with the other dancers and that just isn't Jen's scene. She is all business and is the utmost professional. Jen is absolutely going to break up with him, they just don't have a long term future together," a source close to the singer tells Breaking Celebrity News.

As previously reported, Jennifer Lopez’s twins are proving to be a real handful on mommy’s current tour. According to an eyewitness, Max and Emme, both 4, have been running amok backstage while J. Lo rehearses for her sold-out concerts with Enrique -- wrecking equipment and providing a general nuisance to the stage hands.

Jennifer and Casper began dating last autumn, just a few months after her seven-year marriage to Marc Anthony ended in July 2011.