White House budget director Peter Orszag has a secret love child with the woman he dumped right before hooking up with his current fiance, the New York Post has learned.

Claire Milonas, shipping heiress and his ex-girlfriend, gave birth to Tatiana Zoe on November 17th, 2009. That was about six weeks before Orszag hooked up with Bianna Golodryga of ABC News.

Orszag and Milonas, the daughter of New York-based Greek shipping magnate Spiros Milonas, were a serious item when he met the stunning Golodgryga at the White House correspondents’ dinner.

‘‘Claire told Peter she was pregnant, and he said he’d marry her — and then something went wrong,’’ a source close to the situation told The Post.

‘‘Orszag knocked up (Claire) and now is dumping her to marry Bianna,’’ another insider said.

Orszag has now admitted that the child is his own, making the announcement in a joint statement with Milonas.

“We were in a committed relationship until the spring of 2009. In November, Claire gave birth to a beautiful baby girl. Although we are no longer together, we are both thrilled she is happy and healthy, and we would hope that everyone will respect her privacy.”

Which means Orszag dumped Milonas when she was three months pregnant with his baby. Classy.