Naruto might be initially heartbroken. He is a character who values loyalty and love deeply. So, when he discovers Hinata's cheating, he could be in a state of shock and disbelief.
One possible reason could be her deep love for Naruto. Despite her actions, she realizes that Naruto is the one she truly wants. Cheating goes against her values and her feelings for him, so she regrets it as she understands the harm it has caused to their relationship.
Hinata might be very cautious at first. She has been deeply hurt by Naruto's cheating, so even though he regrets it, she would need time to heal. She may not immediately forgive him and might keep her distance to protect herself.
He would probably have to work really hard to repair the relationship. In fanfiction, Naruto's regret might mean he has to face Hinata's pain directly. Since Hinata has always been so devoted to Naruto, his cheating would be a huge shock. Naruto might try to be more open and honest about his feelings in the future. He could also face social consequences in the village. People might gossip about him and look at him differently. To fix things, he would need to show that he has truly changed and is committed to Hinata again.
Since it's a fanfiction, the idea of Hinata cheating could be a very unorthodox and out - of - character concept. It might be the result of the author wanting to create a controversial or alternative storyline. But in the official Naruto lore, Hinata is not associated with such behavior.
Honestly, I haven't come across a 'cheating Hinata' lemon fanfic. Fanfic writers usually explore a variety of themes, but the combination of 'cheating' and a 'lemon' (which implies sexual content) for a character like Hinata seems rather unappealing and not in line with the positive aspects of the character that most fans would like to see in fan works.
I'm not sure if there is such specific fanfiction. Fanfiction can cover a wide range of wild and unexpected scenarios, but this one seems rather unethical considering the original relationships in the Naruto series. It's also not in line with the positive and loyal characters' personalities in the original work.
Well, there might be some very niche or non - canon fanfictions out there with such a plot, but it's not a common or widely - accepted idea in the Naruto fan community. Naruto and Hinata have a well - established relationship in the main series, and Neji is Hinata's cousin, which makes such a relationship in the context of cheating even more inappropriate and not in line with the general themes of the series.
It could be due to miscommunication. Suppose there was a misunderstanding between her and Naruto. For example, Naruto might have said something that Hinata misinterpreted as him losing interest in their relationship. This confusion could have led her to seek comfort in another person, which unfortunately led to cheating.