I Replaced the Bride with His Ex

On the eve of my wedding with Stellan Crowe, I secretly make his first love, Raina Leigh, his bride instead of me. This comes after I find out that Stellan is only marrying me due to my father's dying wish. The reason why he's never touched me in the past five years of our relationship isn't because of his concern for my heart condition. Rather, he's just preserving his chastity for Raina. That's why when I learn that Stellan has formed a family with Raina behind my back, I decide to sell my shares and leave the country in order to get treated.