(Cover) - EN Showbiz - Monica Bellucci is proud of her "magic" marriage to Vincent Cassel.

Monica and Vincent married in 1999. The Italian actress insists their marriage is as strong as ever, explaining she and Vincent are as in love as they've ever been.

"I ask myself everyday, 'How long will it be as magic ?'", she told French magazine L'Express Styles. "I don't think that you can figure out what the rules are which make a relationship lasting. It's a kind of accident, a conjunction of several causalities which meet and repeat. Or not."

The Black Swan actor has spoken about his jealous nature, and once revealed that he could become dangerous if saw a guy hanging around his wife. However, Monica insists Vincent is fine with her filming steamy scenes with her co-stars.

"But we know the rules of the acting game: if you had to banish the alchemy which happens between two actors, it would be fair to say that it's better to change your job," she added. "While shooting with [Robert] De Niro [on film The Ages of Love] the only jealousy Vincent could have felt was to not have worked alongside De Niro himself!"

The 46-year-old actress gave birth to the couple's second child last year. (C) Cover Media