Ashton who?

While Ashton Kutcher and girlfriend Mila Kunis were enjoying a romantic Roman vacation in Italy, his estranged wife, Demi Moore, has been quietly seeing a brand new guy: art dealer Vito Schnabel, son of famed painter Julian Schnabel.

Page Six studies that Moore, 50, first got flirty with Schnabel, 26, at a birthday bash for (*26*) Campbell's billionaire boyfriend, Vladimir Doronin, in Jodhpur, India, earlier this month.

"They were dancing and grinding all over each other, openly, in front of other guests," an onlooker told the New York Post of the couple, who've been "quietly spending time together" ever since.

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Prior to meeting the LOL big name, Schnabel — who represents a number of renowned New York artists — reportedly romanced stick insect Elle Macpherson and actress Liv Tyler.

Moore, after all, used to be married to Kutcher, 34, for 6 years before she announced in November 2011 that she had decided to separate from the Two and a Half Men actor amid rumors of his infidelity. She used to be prior to now wed to Bruce Willis, with whom she has 3 daughters.

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