Oscar-winning ‘La Vie en Rose’ and ‘The Dark KnightRises’ actress Marion Cotillard and fellow French actor Guillaume Canethave broken up after an 18-year relationship. https://t.co/iRTOumP6mO
—Entertainment Weekly (@EW) June27, 2025
They were together for ages but never married.They have two children. Canet was previously married to Diane Kruger. Source
I don’t think this surprises anyone. They’ve been on and off for years–mostly off since like 2022 or so.