Manga by author Gyogyo Park - Status ongoing

Because of a misunderstanding 8 years ago, Jung Da-ae and Lee Han-eol are mortal enemies. To make things worse, their siblings get married making these two in-laws! But then the bride and groom are killed in an unfortunate accident. In a moment of mourning and arguing in the middle of the road, Jung Da-ae and Lee Han-eol are hit by a truck, killed and transported back to when they were in high school! Is this their chance to fix everything?!

Read The Selfish Romance manhwa fastest"What about you? Seeing that I'm happily with another man." Yu-min and Hyun-do, are in their 30s. For some reason, they broke up with their respective lovers, but they actually regret it more than anyone else. The selfish couple, who want their exes to cling onto them, make a plan. That's right, fake dating to provoke their exes! Will their selfish and foolish plans succeed? ; Selfish Love Theory