The Bliss of Mrs. Blossom

Harriet Blossom is married to Robert Blossom, a businessman who'd rather spend the night at his bra factory than at home with her. One day, Harriet's sewing machine breaks, so Robert sends a repairman, Ambrose, to fix it. It's lust at first sight for Harriet, who convinces Ambrose to hide out in the attic for a tryst.