How many movies have Baek Yoon-jae and Seo Won acted in together?

They have worked on 3 movies together! Their first movie together was My Brother's Wife 4 - Space Princess Choon-hyang (2018) while their highest rated movie together was Friend's Mothers (2018). They have not worked together since An Affair: Kind Daughters-in-law 2 (2018). They are most known for their romance films together.