That Kind of Girl (1963)

In 1960s London, a beautiful continental au pair finds herself wrestling with the affections of an earnest peace-protestor, a dashing young toff and a roguish older man. But fun and freedom turn to shame and despair when she finds that her naivety has put the health of her lovers, and their partners – including the well-meaning Janet (played by Big Zapper's Linda Marlowe, in her first role) – at risk. imdb