Saturday Island(1952)

When their hospital ship sinks in the South Pacific during World War II, military nurse Elizabeth Smythe (Linda Darnell) and Marine Michael Dugan (Tab Hunter) find themselves stranded — and soon enough, falling in love — on an idyllic tropical island. But when British pilot William Peck (Donald Gray) crash-lands on their cozy little atoll, Dugan suddenly discovers he has a rival in love.