One possible plotline could be that Bella suspects Edward of cheating. This might lead to a lot of tension between them. She could start spying on him, following his every move, which is very different from their usual relationship in the original story.
Sorry, I don't have a particular 'Before He Cheats' Twilight fanfic in mind. However, you could also check out Twilight fanfic forums. Fans often share their works or recommend interesting fics in those forums. Maybe someone has written a fic based on the concept of 'Before He Cheats' there.
The book " A Beautiful Wife Is Too Difficult to Pamper " might meet your needs. In it, the male protagonist " suddenly " returns and suspects that the female protagonist is cheating, while the female protagonist marries the male protagonist with the goal of paying a large sum of money to have a child. This is also in line with the signs before a man cheats. In addition, this novel also had a cute baby and a warm sweet pet plot, which was worth reading. I hope you like my recommendation.😗
The lyrics of Hua Chenyu's song " Flight Mode " had the following content: Worry, no trace, lost the universe, thunder monkey, letmego, letmego, how many square meters should I change the soil into a tall building, life, don't look at who is bitter, who is the head, seven aunts and eight aunts nagging non-stop, the year is bright and beautiful, Ringlikeabomblikeabomb, etc.
" We Seems to Have Seen Each Other Somewhere " was a song sung by Yang Zongwei and Ye Bei. The lyrics described the scene of two people meeting in different seasons, as well as their feelings of meeting in this life. The lyrics mentioned different seasons such as spring, summer, autumn, and winter, as well as the encounters and memories of the two people at different times. This song expressed the longing and cherishment of love, as well as the feelings for fate and expectations for the future.
Well, it depends on the context of the light novel. It could have cheats related to leveling up quickly in a game - like scenario within the novel. For example, finding a hidden item that multiplies experience points. Or perhaps cheats for getting rare items or unlocking secret areas. Without reading the novel, it's hard to say exactly what the cheats are.
It could be that the girl's trust was completely shattered, and in a moment of intense anger and a sense of injustice, she decides to kill the guy. Also, it might be a build-up of frustration and disappointment over time that explodes in this drastic act.