My Night at Maud's (1969)

A solitary and devout engineer, Jean-Louis, relocates for a new job, where his only solace is his unwavering faith. Mesmerized by a mysterious blonde woman he sees at Mass, he becomes convinced she is destined to be his wife. Jean-Louis is invited to dinner at her apartment. As snow traps Jean-Louis overnight, his steadfast beliefs are tested, forcing him to confront his desires and the rigid principles he has always held dear.