One idea could be to expose his cheating to all his friends and family. This would damage his reputation. Another could be to get involved in his work life in a way that makes things difficult for him, like if he has a project coming up, you could find a way to disrupt it subtly. But remember, revenge might not always be the healthiest option in the long run.
She might start by gathering evidence of his cheating. This could include text messages, photos, or witness statements. Once she has enough evidence, she can decide how to use it to her advantage in her revenge plan.
There could be social consequences too. In many novels, the characters live in a community or social circle. When the cheating is discovered, the person who cheated and the best friend might be ostracized. Their reputations can be severely damaged, and they may face a lot of judgment from others. It can also lead to a cycle of guilt and self - loathing for the ones who were involved in the cheating.
One such novel could be 'Gone Girl'. In this book, there are complex relationship dynamics that might touch on themes related to betrayal. However, it's not exactly the same as straightforward 'cheating with boyfriend's best friend' but has elements of relationship deceptions.
A wife cheating on her husband in a revenge novel usually involved the following plot:
The protagonist was cheated on by his wife. He felt angry, disappointed and desperate, and decided to take revenge.
Through various means, including investigation, stalking, threats, etc., the protagonist finally succeeded in exposing the truth of his wife's adultery, making her feel guilty and ashamed.
After revenge, the protagonist would usually seek inner balance and repair, try to communicate with his wife and try to forgive her mistakes.
In some novels, the protagonist may choose to divorce or take other actions to end the marriage, but after revenge, he will usually reconsider his life choices and start a new life.
This kind of novel usually involved topics such as love, marriage, family, morality, etc., which might bring readers deep thoughts and enlightenment.
One story I heard was about a woman who found out her partner was cheating. Instead of making a scene immediately, she quietly collected evidence of his affairs. She then sent an anonymous package to his workplace with all the proof, which led to him getting fired and his reputation in tatters.
Well, perhaps in the novel, the wife might start by exposing his cheating ways to their friends and family. This would be a way to embarrass him publicly.
First, create complex characters. Develop the cheating boyfriend with motives for his actions, like being insecure or tempted by someone new. For the female lead, give her a strong personality so she can react realistically to the betrayal. For example, she could be a strong - willed woman who refuses to be a victim.