A Bride for His Majesty's Pleasure: Harlequin comics

Fortenegro is a tiny island country in the Aegis Sea. Ionanthe's elder sister married the kingdom's Crown Prince Max, but continually cheated on him, and ultimately died in an accident with a lover. According to the kingdom's laws, Ionanthe must pay for her sister's sins by marrying Max and bearing him an heir. To think that she'd be forced into marriage in the twenty-first century! Still, she finds herself melting when the drop-dead gorgeous man gives her a steamy kiss during their marriage parade. But to Max, their marriage is merely his duty…