His Discarded Pawn, Her Checkmate Move 37

For years, Catherine devoted her heart to Sebastian, only to be used as his pawn. He tasked her with winning Louis's affections, intending to sabotage the marriage between Louis and his true love, Olivia. When Catherine uncovered this ultimate scam, a profound disappointment led her to turn the sham into reality. She married Louis, leaving Sebastian with a regret that arrived too late to change anything.