The Uninhibited(1965)

...the woman who is not quite inexperienced...the man who is not quite a man...the man who is not innocent-

Vincent is recovering from a nervous breakdown in a seaside village on the Costa Brava. He enters into an affair with nightclub owner Jenny, but their relationship changes when she falls for alcoholic author Pascal Regnier, who is struggling to resume his writing career. Vincent eventually returns home, leaving Jenny to stay on with Pascal and his young son Daniel.