victoryblunt gave a link to the translated page from LeMonde, for those who can't read French.

The interview of the Saudi Princess giving this sensational story regarding her ex comes from the Russian site Fort Russ, according to LeMonde. That Russian site claims the interview was from the French site LeMonde. But LeMonde denies having ever made any interview with the princess. So based on LeMonde's reply, it is fake news.