I saw this on Prime and it was hot. Gong Yoo is sizzling and so are the sexy scenes. Great chemistry between the two leads and the scenes between them were done tastefully. The story line was moving and the impact of what extramarital affairs can do between two people and their family is well told and portrayed. I detest cheating but I watched this because of the superb acting. I wish they'll just get out of an unhappy marriage instead of cheating. I also wish they'll find happiness somehow. Anyway, if you're just here to see great acting by the main leads, then go ahead and watch it.