I Married His Lookalike

Wanted to watch this because Kim Han-young plays a dual role. It's a revenge romance: the heroine's life collapses after her husband's betrayal, and she marries a man who looks exactly like him to get her revenge. The two doppelganger-alike men and the heroine's emotional arc are the real draw, and the back half ties up every loose thread. Kim Han-young splits into the trash ex-husband and, post-remarriage, the wife's uncle-in-law, really fun to watch ^^