Though the former French President never admitted to it, rumours of him and his wife, model Carla Bruni both having affairs outside their marriage surfaced in the media in 2010. While details of Carla’s affair with musician Benjamin Biolay made headlines, Sarkozy’s involvement with his ecology minister Chantal Jouanno was hushed up soon.
Source: From Bill Clinton to Nelson Mandela, world leaders who cheated on their wives – The Economic Times
