Bethenny Frankel is not dating German artist Niclas Castello — he’s seeing Bravo hopeful Anna Rothschild instead

It’s too bad Bravo’s Palm Beach pilot “Snowbirds” isn’t picked up yet because the network would surely want the cameras rolling for this story line.

Former “The Real Housewives of New York City” star Bethenny Frankel and German artist Niclas Castello sparked dating buzz after they were photographed on the beach together in St. Tropez last month.

But it turns out it was just a platonic hang and he’s been dating wannabe Bravolebrity Anna Rothschild according to sources.

In fact, they started seeing each other around the same time he was snapped with Frankel!

A source told us skincare guru Peter Thomas Roth introduced Castello to PR guru Rothschild while vacationing in St. Tropez, and they’ve been dating for about two months now.

“He was never seeing Bethenny. They were with a group of ten people when those pictures were taken,” the source claimed.

Castello and Rothschild confirmed they’re an item when we reached out for comment on Wednesday.

He’s currently shacking up with Rothschild and her dog, Chloe, while on holiday in New York City, and they most certainly appear to be in the juvenile stages of their relationship.

They were spotted frolicking like teenagers at Cipriani Downtown on Tuesday night. We hear they made out like rabbits at the table during dinner and cocktails at the trendy Soho spot.

Rothschild took him on a Chelsea gallery stroll – including a visit to her daughter’s Sundara Tagore Gallery – the following afternoon.

“We’re having fun. I find him extremely interesting and talented,” she told us.

Rothschild is a part of the cast for “Snowbirds” a reality show that, productions Purveyors of Pop, is hoping Bravo will greenlight. Rachel Uchitel, Libbie Mugrabi’s mom Jane Scher and Cindy Guyer are a few names attached to the show.

A rep for Bravo has yet to comment. Frankel did not get back to us.