Arrange Marriage With My Ex ( Vrene)

Irene has been arrange marriage by her parent when she came back to seoul from L.A. with her sister. Her parent has made a promise to their friend during high school that there children well marry if they have a opposite gender. The problem was her fiance was her ex-boyfriend that did even not love her during the first year of highschool, it was just a bet from his friend.

Then what happen between Irene and Taehyun?

Well Irene forgive Taehyun?

Well there love grow bigger or there hate grow bigger?