https://www.novelupdatesforum.com/threads/i-will-divorce-the-female-lead%E2%80%99s-siscon-brother.144657/
I'd read spoilers first because I read so much that I may be confused. So blue chit went back in time and changed fl destiny. Fl was supposed to be adopted and that'll be revealed in the mother's diary or will or something. I think there is like 2 or 3 tinelines actually. Anyways, this also makes sense why fl and the bro couldn't do romantic sexy stuff because, blue chit changed this time line (they still had residual familiar feelings or something). Anyways, war or God or something happens and blue chit dies. She wants to tell everyone she is sorry.
I really probably mixed this story up so I'd suggest just checking the link but remember to take spoilers with a pinch of salt.
So if the spoiler page is true, she didn't suffer enough for me. That stealer and just ugh blue haired chit....sigh can someone spoil it for me if she actually does it have it worse than what is written on the forum?