"Love is unstoppable sometimes, we can't do anything than letting it be"

What happens when the girl who was your best friend proposes you on farewell and doesn't want an answer because she actually knows you have a fiance and leaves you and meets after 6 years as your secretary

 It is exactly what happened to the male lead Alexander Parker what happens when his path collides with Elina James his former best friend and newly appointed assistant? Is there love or hatred?

The world famous first love