They're at each other's throats when they're not in each other's arms!

His Girl Friday (1940)

Directed by Howard Hawks

Walter Burns is an irresistibly conniving newspaper publisher desperate to woo back his paper’s star reporter, who also happens to be his estranged wife. She’s threatening to quit and settle down with a new beau, but, as Walter knows, she has a weakness: she can’t resist a juicy scoop.