At first, I failed the quick time event and thought that was the ending.
And after completing the game, I went back to fail it on purpose because that's probably the best ending. The bride gets her karma, and Bok-su doesn't get away with murdering Myeong-hoon.
And then I restarted the game and overwrote my save with one where the groom is still alive. He didn't deserve any of this T_T (in my interpretation, the cheating thing was something Bok-su more/less made up on the spot)
Great game, wins my "screw you for playing my heartstrings, 20/10, now get out of my sight" award.