Marrying my heartbreaker

Nikita Fajardo - The only girl descendant of the Fajardo family. Her grandfather made an oath with his Elizalde bestfriend; an oath where they would get one of their children to marry each other but unfortunately, they both had sons. Before he lay on his death bed, he made his sons promise that they will fulfill the oath with her granddaughter Nikita and one of Elizalde's grandson.

But what would Nikita do if the man she's about to marry is also the same man who broke her heart?