Sometimes it's about competition. In a social group or environment, women might see getting the man as a kind of victory or achievement. It's like a competition where the 'prize' is the man's affection. So they fight over him to come out on top in this unspoken competition.
Insecurity can also play a role. A woman might feel that she needs to prove herself better than the other woman to be worthy of the man's attention. So she starts a fight to show that she is more attractive, intelligent or suitable for the man.
One possible reason could be jealousy. Maybe one of the Weasleys develops romantic feelings for Hermione and the others don't approve or also have feelings for her. Another reason might be related to her magical abilities. If Hermione has some unique magic or knowledge that the Weasleys think can benefit them or their family in different ways, they could fight over it. For example, her knowledge of ancient spells could be seen as a great asset.
Power struggles can be a reason. Spider Man, being a solo hero with his own set of powers and moral code, might not agree with Shield's more bureaucratic and sometimes secretive ways of handling things, so they clash. For example, Shield might want to control Spider Man's actions, which he resists. This can lead to a fight. Also, there could be a villain manipulating events behind the scenes to make it seem like Spider Man is against Shield or vice versa.
Here's another. In a college campus, Jane and Mary were attracted to a popular boy named Jack. They were both in the same club as Jack. One time, there was a club event where they were supposed to choose partners for a team activity. Jane and Mary both made a beeline for Jack. They started bickering about who had known Jack longer and who had more in common with him. Jack was caught in the middle and finally just chose another girl to be his partner for the activity to avoid the drama. As a result, Jane and Mary were left embarrassed and realized their fight was rather silly.
One type of story could be in a high - school setting. There might be two girls who both like the same popular boy. They might start gossiping about each other or trying to outdo each other in terms of appearance to get the boy's attention. But this is a rather immature way of handling relationships.
In fanfiction, it could be about status. Ginny is a Weasley, part of a large and well - known wizarding family. Cho might see Ginny as having an unfair advantage in winning Harry's heart because of her family ties. On the other hand, Cho is a popular and intelligent Ravenclaw. She might think her own qualities are being overlooked in favor of Ginny. Also, their different personalities play a role. Ginny is feisty and bold, while Cho is more sensitive and reserved. This can lead to clashes as they both vie for Harry's attention.
One reason could be Naruto's power. In the Naruto universe, Naruto has great power, and both Itachi and Sasuke might see Naruto as a key to achieving certain goals. Itachi might want to protect Naruto because he sees Naruto as a force for good in the future of the ninja world. Sasuke, on the other hand, may view Naruto as a rival in terms of power and influence, and in fanfiction, this could lead to a fight between them over Naruto.
One reason could be jealousy. Maybe Ron feels that Harry is getting too close to Hermione and he's afraid of losing her attention. In fanfiction, authors often play with the characters' emotions. Harry, on the other hand, might see Ron as being too possessive of Hermione.
One reason could be love. Hermione is a smart and kind - hearted girl, and the Weasley boys might all develop feelings for her. Jealousy would then be a big factor in their fights.
In fanfiction, Sirius and Remus could fight over Hermione because of their different relationships with Harry. Since Hermione is Harry's close friend, Sirius might think that he should have more influence over Hermione to help Harry better, as he is Harry's godfather. On the other hand, Remus, being Harry's former teacher and friend, also feels a sense of responsibility towards Hermione because of her connection to Harry. This clash of responsibilities and their own personal feelings for Hermione can spark a fight.
One reason could be jealousy. Snape might be jealous of James' popularity and charm. James, on the other hand, could be jealous of Snape's close friendship with Lily in their early years. Another reason is their different personalities. James was outgoing and bold, while Snape was more introverted and brooding. Lily might be attracted to different aspects of each of them, which could lead to the fight as they both compete for her attention.