It doesn’t look like Bethenny Frankel has moved on from ex-fiancé Paul Bernon just yet! After The Real Housewives of New York City alum, 53, and German artist Niclas Castello, 46, were rumored to be romantically linked, a source clarified that the sculptor is dating another woman. According to the insider, Castello is dating NYC PR expert Anna Rothschild. When it comes to the nature of his dynamic with Frankel, the source revealed, “They met twice in St. Tropez — first at a lunch with a group, where she sat at a different table with her daughter and then a few days later on the beach.” “He was…