Thieves (1977)

A comedy about love, marriage, reconciliation and other acts of courage.

Martin and Sally Cramer grew up on the hardscrabble Lower East Side, where Sally still teaches; meanwhile, Martin's the head of a fancy private school. Romantic dalliances with others convince them that they're meant to be together despite their differences, a decision that's cemented, oddly enough, by an over-the-top argument that draws the police.