A representative for the "Black Swan" actress said the two were not dating. However a source said Kutcher used to have a crush on Kunis. "He was so in love with her for a while when they worked together.

Ashton Kutcher. Pics/AFP

He thought she was a goddess, was always talking about how beautiful she is. But she was with Macaulay Culkin for a lot of that time and also just generally gave off a not interested vibe.

It never happened, but I'm not surprised by this at all," a source said. Kutcher split with wife Demi Moore after six-years of marriage last year and was alleged to have cheated on her with 22-year-old Sara Neal following a party. 

Mila Kunis. PIcs/AFP