They fell in love during filming, are expecting a child together this year and have been at each other’s side for months, so it is no surprise to learn that Natalie Portman’s fiancé  is defending her amidst criticism that she had a dancing double in Black Swan, ala Flashdance.

In a new interview, Benjamin Millepied, 33, the French choreographer who met the actress ,29,  during the grueling filming of Black Swan,  responded to naysayers who claim that the dance moves were mostly done by another dancer.

“There are articles now talking about her dance double American Ballet Theatre dancer Sarah Lane that are making it sound like Lane did a lot of the work, but really, she just did the footwork, and the fouettes, and one diagonal phrase in the studio.

“Honestly, 85% of that movie is Natalie,” he told the Los Angeles Times.

Portman  -- who trained for a year for the intense dance sequences -- won the Academy Award for Best Actress her role in Black Swan, which will be released on DVD next week.