– Just days after the world learned of Demi Moore's latest younger man, he has apparently dumped her. "Vito has worked very hard to be taken seriously in the art business, and doesn’t want to be seen as somebody who dates celebrities," a source explains to the New York Post, adding that the constant stream of paparazzi proved to be too much for the artist. The final straw? "Demi flew down to party at [Miami's] Art Basel while he was working to build his business," the source says. "It was a distraction he didn't need," so he broke up with her then and there. That didn't dissuade Moore from her mission, though, as she just partied with Lenny Kravitz and other celebs instead. And that did not please her daughters, who are "ever increasingly concerned" about their mom's bizarre behavior, a source tells Radar. Moore was snapped dancing at one of the Miami parties (click to see), and she showed up at another party with a stray cat she found at a pool. Later, she walked the red carpet for another art gala in a cleavage-baring dress and gigantic eyeglasses, making all sorts of faces for photographers. "Rumer, Tallulah, and Scout are mortified," the source says.