In 2005, Ulliel was spotted with Cecile Cassel. Cecile Cassel is talented actress and singer from France. She is also a recording artist and has released several albums. This love life lasted for about two years and they called off their romantic love affairs in 2007.
Soon after Ulliel called off his love life with Cecile, he was seen dating Charlotte Casiraghi. Charlotte Casiraghi is a writer and editor and she is mainly known in the world as the second child of Caroline, Princess of Hanover. He dated her as his girlfriend for few months.
Shortly after Ulliel broke up with Charlotte Casiraghi, he was seen with Jordane Crantelle having romantic love affairs with her. They began dating each other in 2008 and they were together for about half a decade. They broke up in 2013.
Though his previous love life was unsuccessful, he is having a successful and lovely love life with Gaëlle Piétri. Gaëlle Piétri is a signer and model from France. At the end of 2015, they announced that they are about to welcome their first child together. Besides this love life, there is no any information about his married life and spouse.
With the completion of his secondary education, Ulliel joined University of Saint-Denis. There he began studying cinema. While he was in his school, he also starred in several school plays. There he appeared in the plays like Une Femme En Blanc, and Les égarés. He made his feature film debut in the late 1990s by starring the role of Olivier Rousseau in the movie Mission protection rapprochée. In 1998, he appeared in the movie Bonnes vacances. In 1999, he played his role in the movies like Le refuge, La bascule, Alias and Juliette. His net worth is 8 million Dollars.