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Jennifer Lopez and Casper Smart are apparently giving it another go!

Entertainment Tonight is reporting that the former couple are back on again and that they rang in the New Year together in Las Vegas as J.Lo performed a semi-private show at Caesars Palace.

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Following the concert, "Jenny from the Block" was reportedly holding hands with a mystery man backstage, but Casper was not identified as the mystery man at the time.

The couple dated for three years before splitting in June 2014, but they've remained cordial.

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Shortly before breaking up, J.Lo spoke about love with ET, saying, "A relationship should be supportive, uplift you, it should make you feel confident, feel better, they should be adding to the relationship that's already inside you."

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But even Jennifer can laugh at her rocky track record. At a recent taping of "American Idol," J.Lo said she is great in relationships, but admitted that she has a penchant for picking the wrong guys.

Best of luck to the couple ... again.