The Fantasticks.

Widowers Amos and Ben plot to romantically unite Amos' daughter Luisa and Ben's son Matt by pretending to feud and forbidding the teens to associate, knowing they will resist their fathers' interference. As the youngsters fall in love, the fathers plot to end the 'feud' by hiring a travelling showman to fake an abduction and allow Matt to 'rescue' Luisa.