The former first lady jokingly said: ‘I could do extreme gestures, like cut his throat or his ears when he’s asleep for example.
‘I think you should avoid to cheat if you can, it’s too dangerous. It’s a road to a break up.
‘Also, fidelity, this is a sine qua non (essential) condition for a wedding, I guess. Why cheat and lie whereas you have the possibility to choose your life, get married or not, have kids or not.’
Bruni who made a name for herself as a model and singer married Sarkozy in 2008, months after he split from his second wife, Cecilia.