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Casper Smart’s wandering eye could be the reason why Jennifer Lopez finally ended their relationship.

The on-again-off-again couple called it quits again in August. At the time, it was rumored that J. Lo had enough of her man after he skipped out on an appearance in the Hamptons with her to hang out with his boys in Las Vegas.

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Now, someone claims the real reason was actually much worse.

According to PEOPLE, a source close to the couple says Smart’s cheating was the reason behind the split.

“She kicked him out because he cheated on her and he got caught,” the source claimed. “It happened two years ago, and he promised he would never do it again and once he did, she was done.”

Now, Smart is doing everything in his power to win the “Ain’t Your Mama” singer back.

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He has reportedly “been doing everything he can to get back together, working on himself and posting on his Instagram saying that ‘Life is Good’ and showing off his new leg tattoo that says ‘You must embrace the darkness to see the light.’”

“He says he’s changed and that he is a new man but recently, on a video shoot for Wisin in Mexico, he was posting videos with bikini-clad dancers and not acting like a guy trying to remedy old habits. He was kicked to the curb not because he did not attend a party with J. Lo but because he was caught having parties of his own,” says the source. “No one has time for that, especially J. Lo.”

A rep for Smart confirmed that he was in fact in Wisin this past week, but stressed that everything was “strictly work, nothing personal.”

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