I‘m searching for a shoujo(?) webtoon uncompleted. It‘s about a woman that wants do d...

I‘m searching for a shoujo(?) webtoon uncompleted. It‘s about a woman that wants do divorce her husband that she knew since highschool because she finds out that she cheated on her with a girl that she also knew since highschool days. And that girl only slept with him because she wants to destroy the husbands life because his father killed her family in a caraccident. And the husband slept with her because he was very frustated with his girlfriend (I‘m not sure anymore). And the webtoon tells their story abut their past and also sometimes what is happening after she wants to divorce him. One past memory is for example that the wife was bullied in school because she was „ugly“ and he only confessed to her because of a losing bet, but after days passed he fell in love with her(of course she didnt know it was a bet and only found out in the present after she opened a paper star he made for her in the past and told her to only open it when she is alone but she never opened it)

I dont know if the desciption helped but I hope someone knows which one I mean D: