Love Settled, No Debts Owed

The first day I transmigrated into a tragic novel, the system handed me a job: "Win the true heart of the original owner's boyfriend, Reuben Simmons, or earn a full hundred million." But before I could even make my choice, Reuben's first love sent him a message. "Reuben, my heart is dead and I've left him. Does your promise to marry me at thirty still count?" I stared at him and thought: when authors write a devoted second male lead, do they never care whether his current girlfriend lives or dies?