Bought with His Name (1982)

Luke Ferguson was absolutely - though wrongly - convinced that Genista was having an affair with her boss, Bob Norman, and to prevent her, as he thought, wrecking Bob's marriage, he blackmailed her into marrying him. The plan backfired when Genista fell in love with Luke, for he remained convinced that it was Bob she loved, and then Luke's old love, the spiteful Verity, reappeared, announcing firmly to Genista that she was going to have him back...