Well, it depends on how the writer wants to take it. If it's a more angsty fanfic, their relationship could be on the rocks for a long time. Ron's outburst might make Hermione question their friendship. But if it's a more light - hearted fanfic, they could quickly make up. For instance, Ron could accidentally trip over his own feet while trying to apologize to Hermione, which would make her laugh and forgive him right away. Their relationship could then continue with a bit more self - awareness on Ron's part about his temper.
One idea could be that Ron has been having a bad day and seeing Hermione at the Quidditch match makes him snap because he feels she should be studying instead. Maybe he's worried about upcoming exams and thinks Hermione is being too carefree. Another idea is that Ron is jealous. He sees Hermione chatting with one of the Quidditch players and gets mad because he secretly has feelings for her but doesn't know how to express it.
Title: 'Ron's Jealous Rage at the Quidditch Pitch'. In the fanfic, Ron sees Hermione chatting animatedly with one of the Quidditch players. He misinterprets it as something more and gets mad. Hermione is confused by his sudden anger. As the story progresses, Ron realizes his mistake when he overhears Hermione talking about how she was just asking the player for advice on a spell to help the team. They then have a heart - to - heart and Ron apologizes.
Ron could be mad because he has some unspoken feelings for Hermione that he's not fully aware of yet. When he sees her at Quidditch, enjoying herself without him, it stirs up these confusing emotions inside him. Additionally, if there were rumors going around Hogwarts about Hermione and someone at Quidditch, Ron, being the hot - headed person he can be, might get angry without even verifying the rumors.
It might make Ron more protective of Hermione. Just seeing the physical mark of something she has endured could trigger his instinct to keep her safe. For example, he might start to be more cautious when they are on adventures together.
After the kiss, their relationship might become more openly affectionate. They could start holding hands more often, stealing glances at each other, and being more protective of one another.
Their relationship might become stronger as they face the challenges of post - war life together. They have already been through so much during the war, and this shared experience could deepen their bond.
In many fanfics, their relationship develops through shared hardships during the search for Horcruxes. They rely on each other more and more, which deepens their emotional connection.
There could be a break in their friendship. Ron might realize he made a mistake, but Hermione might not be so quick to forgive. It could take a long time for them to get back to the way they were, if they ever do. They might have to go through a lot of awkward moments and difficult conversations.
They might face some challenges in fanfiction. For example, Ron could struggle with feeling inferior to Hermione's intelligence at times. But they would work through it. Their love for each other would grow deeper as they support one another through the post - battle traumas and the changes in the wizarding world.
It might make Ron a bit jealous at first. He could see it as Hermione choosing Harry over him in a way. But then he realizes it's just a friendly gesture and starts to be more supportive of their friendship.