Portman fell in love with partner through romantic dancing

Pregnant actress Natalie Portman fell in love with her fiance Benjamin Millepied during the 'romantic' dances for ballet film Black Swan.

The Hollywood star met her choreographer partner on the set of the acclaimed film and are since engaged and expecting a baby.

Portman admits their love grew during filming and she credits the dance scenes which brought them closer together.

She tells US TV host Ellen DeGeneres: "It was definitely over time as we worked together more, it's very romantic to dance together.

"He choreographed the dancing and he's my partner in the film as well."