Worth Waiting For (1962)

Highschoolers Joe and Julie just got engaged and nobody is happy about it. Julie is willing to drop out of school her senior year to get a job and raise a family. Joe is quitting the football team so he can work a crappy job at the bank, much to his little brother Gordy and the coach's chagrin. While this film explicitly addresses the pitfalls of young marriage, it implicitly addresses the bigger issue of horny high school kids eager to have sex and then, have to get married - "like Vivian and Rex had to".