Maybe there was a misunderstanding. For example, the reader might have accidentally taken something that belonged to Taehyung without realizing it, and Taehyung thought it was on purpose, so they glared at each other.
It could be due to a difference in opinions. Suppose there was a discussion about a certain topic like what kind of music is the best. Taehyung might have a strong preference for one type while the reader completely disagrees, and this led to a glare - a non - verbal sign of their conflicting views.
There might be a personal space issue. Perhaps the reader got a bit too close to Taehyung without his consent, and he felt uncomfortable. In response, the reader might have felt offended by his reaction, and thus the glaring started as a way of showing their dissatisfaction with each other.
They could start by having an honest conversation. Just sit down and talk about what made them glare at each other in the first place. By communicating openly, they can clear up any misunderstandings.
It might be due to differences in opinions. Suppose they were discussing a movie. Taehyung thought it was great, but the reader found it boring. Their strong feelings about their own views could escalate into a fight. If they are both stubborn about their stances, it would be hard to resolve the conflict immediately.
Well, in such a fanfic, perhaps he fainted because of a hidden medical condition. It could be something that he has been keeping to himself, like a heart problem that flares up suddenly. Or it might be related to stress. The pressure of being in the public eye, meeting fans' expectations, and dealing with the competitive music industry can all add up. And in the fanfic world, this stress could manifest as a fainting spell. Also, it could be a result of some sort of magic or supernatural influence if the fanfic has such elements in it.
One possible reason could be a misunderstanding. Maybe Ginny overheard Harry saying something that she misinterpreted, leading her to want to avoid him. For example, if Harry was talking about his future plans and Ginny thought he was excluding her from them without really understanding his full intention.
One possible plot reason could be a misunderstanding over creative differences. For example, in a fanfic, one member might have a strong idea for a new song or performance concept, but the others don't see it the same way at first. This could lead to arguments and a sense of fighting between them. Another reason could be related to external pressures, like excessive media attention or overzealous fans. If the members are constantly being pitted against each other by the media or some fans, it might create a fictional scenario where they start to have real friction among themselves in the fanfic.
One reason could be jealousy. Maybe Hermione is jealous of Harry's fame and Harry is jealous of Hermione's intelligence. Another reason might be conflicting views on how to deal with Voldemort. Hermione might advocate for a more academic, research - based approach while Harry just wants to go and fight.
It could be a big fight or misunderstanding. Maybe one friend did something that really hurt the other's feelings.
Sometimes, it's just a different take on their characters for the sake of creating drama. The author wants to explore a new dynamic that goes against the normal love - interest relationship. So they make Adrien and Marinette hate each other to see how the story unfolds in a completely different way from the original plot.
I'm not sure specifically as there could be many different 'taehyung and reader' stories on Tumblr. It might be a fan - made story about Taehyung and a fictional reader, perhaps involving romance, friendship or some kind of adventure.
Taehyung and the reader could meet at a concert. The reader is a huge fan of the music being played, and Taehyung is there for the same reason. They accidentally bump into each other while trying to get a better view of the stage. They start chatting about their favorite bands and songs. By the end of the concert, they exchange numbers and plan to meet up again to go to another concert together.