A Fine Romance (1981)

British sitcom about the simple relationship between Mike (Michael Williams) and Laura (Dame Judi Dench), two fairly unlikely individuals who come together and form an unmarried union. Nearing forty, Laura appears perplexed most of the time. Mike sports a perpetual grin. They first meet during a party at the insistence of Laura's younger sister, Helen (Susan Penhaligon), and Mike's sweet, inept, and endearing character sparks something in the bossy, stubborn, big-softy Laura. They never quite hit it off, but there's something there that keeps them together.