Indecent Proposal (1993)

David (Woody Harrelson) and Diana Murphy (Demi Moore) are a loving couple with a bright future. David is a talented architect; Diana is a top-notch real estate agent. But when the recession hits, their finances take a nosedive. In a last-ditch effort to save their dream home, they head to Las Vegas to win their mortgage money gambling. After they lose everything, a mysterious billionaire (Robert Redford) offers the solution to their money problems: $1 million -- if he can sleep with Diana.