Wife by Arrangement: Harlequin comics

Heather has been charmed by Lorenzo, a rich elite from Sicily. He's a gentleman, but weak and powerless in the face of his overwhelming brother Renato. Suspicious that Heather may simply be after their fortune, Renato investigates and subjects the woman to a bizarre test, even going as far as to tempt her with a large sum of money. She refuses, and so he rewards her by ordering her to marry his brother...