Cross My Heart and Hope to Die

Silvia Florette wants nothing more than to die. In fact, most days, she can't even be bothered to get out of bed. Sentenced to repeat life 99 times, she agrees to marry Duke Randall in an attempt to appease God and die at the earliest convenience. However, while Silvia is eager to consummate the marriage, her husband insists they must first fall in love before they can finally sleep together.

(Source: Webtoon Entertainment)