Its the French ...laissez faire, very amorous and highly tolerant to sexual scandal...this is nothing. Remember the Dominique Strauss-Kahn?
Ménage à trois is a French invention

Nikolas Sarkozy had sizzling affairs and palace intrigues with his model wife, ex-wife and an MP or Minister called Rachida Dati. Used to make fascinating reading. The only people who can surpass this are the Italians (Berlusconi and his bunga bunga fiascos)