Jennifer Lopez and Casper Smart are definitely dating and official.

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Lopez, an American Idol judge, posted an Instagram photo of her on-again, off-again boyfriend in honor of "Man Crush Monday" two days ago.

Lopez, 45, captioned the photo of Smart, 28, "#MCM @beaucaspersmart #lovethispic #handsomebear."

Smart and Lopez have been keeping a very low profile until now. It hasn't been clear for quite some time whether they've been romantically involved or just good friends because despite dating denials from both individuals, they've been spotted on numerous occasions spending quality time together in public.

Lopez and her choreographer and former backup dancer had dated for almost four years before they decided to split in June 2014.

Lopez just insisted to E! News last month she was single although she enjoyed a vacation with Smart to Mexico in which Lopez's twins with ex-husband Marc Anthony were also along for the ride.

Reports emerged in March that the pair had staged their breakup as a business move and publicity stunt because they were both promoting movies at the time. Evidence had also continued to surface that was the case.

In March, the couple was caught kissing on the American Idol set, and before that, a paparazzo had photographed them driving together in a convertible BMW -- which prompted Lopez to slump down in her seat to hide from the camera. Back in January, Smart's dog bit one of Lopez's neighbors, and they had also attended a Big Sean concert together.