Getting Married To My Enemy Lover

Raisa Pound and William Sanchez have always had a love hate relationship. They had always been like this since they were kids as their parents were friends. William is heir to the Sanchez firm and travels abroad for business. While Raisa stays back. 
After a few years of study, William has to return home for an emergency. There is a pressing issue and the only way it can be solved is if they get married. The tension is at its peak, something however happens before their marriage which exposes a lot.