Charming but smarmy French vintner's son who smuggles a stolen diamond necklace in a grape vine. He evolves from a self-interested opportunist into a devoted partner who helps Kate find her confidence and true love.
Luc confesses his love on the airplane and they share a passionate kiss on the vineyard they own together at the end.
Cardon knows Luc's smuggling profession but refuses to arrest him because Luc once saved his life.
Luc goes to bed with Juliette to distract her but stops when he accidentally calls her Kate, revealing his shifting affections.
Luc distracts Juliette during Kate's dinner with Charlie, acting as a romantic obstacle and catalyst for Kate's detachment.
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