In this fanfiction scenario, Naruto might seek advice from his friends. Sasuke could be rather cynical about it, saying something like 'I knew she wasn't trustworthy.' While Sakura might be more empathetic and try to comfort Naruto. Naruto could also start to have flashbacks of his relationship with Anko and notice all the signs he missed that indicated she was cheating.
He might also become more reserved in future relationships. After being cheated on by Anko, Naruto could be more cautious when it comes to getting close to someone again, always having that fear in the back of his mind that he could be betrayed once more.
Anko might start off as just a savior. But after saving Naruto, she could become more protective. Her tough exterior might soften a bit as she realizes Naruto's importance not just to the village but also to her on a personal level.
It might be that the author is exploring a different side of the characters. Temari, being a strong - willed character, could be written into a situation where she makes a wrong choice regarding her relationship with Naruto. This could be due to her own insecurities or a desire for something else that she misinterprets as more important than her relationship at that moment.
In fanfiction, such a plot might occur due to the writer wanting to create drama. They might twist the relationships in the Naruto universe to explore extreme emotional situations. For example, the writer could be trying to show how Naruto, who is usually seen as strong and reliable, would react to such a betrayal. It's a way to take the characters out of their normal characterizations and see how they adapt.
I'm not sure if there is an exact fanfiction with this title. But if it exists, a possible plotline could be that Anko discovers Naruto's so - called 'cheating' through some misunderstanding. Maybe she sees Naruto with another girl in a compromising situation that is actually innocent. This could lead to a rift in their relationship, and Naruto would then have to work hard to clear his name and win Anko back.
Naruto may become more guarded. After being cheated on by Sakura, he'll be less likely to open up to people easily. He might seem tougher on the outside.
Ino could be a very complex character in this fanfiction. It's possible that she cheats on Naruto because she has a fear of commitment. Naruto is a very passionate and all - in kind of person, and that might scare Ino. So, to avoid getting too deep into the relationship, she cheats. Or perhaps there's a power struggle at play. She might think that being with a different person would give her more influence or status in the ninja world. And there could be a hidden agenda that she's following, something that she can't achieve with Naruto but believes she can with someone else.
It could be that the fanfic writer is trying to combine the two universes in a rather dark way. In Fairy Tail, there are all sorts of magic and temptations. If a character from Naruto's world gets involved with someone from Fairy Tail, they might be easily cheated on. For example, if a Fairy Tail character has a magic ability to manipulate emotions, they could use it to deceive Naruto's character.
In a Naruto has a crush on Anko fanfiction, their relationship could start with Naruto being his usual clumsy yet endearing self around Anko. He might stutter when he talks to her at first. Anko, being the tough kunoichi she is, could initially be dismissive but gradually warm up to Naruto's genuine feelings as she sees his growth and determination. This could lead to them training together more often, and Naruto's crush could turn into a deep mutual respect and perhaps even love over time.
Well, in such a fanfiction, Naruto's character might become more cynical at first. Being cheated on is a huge blow, and it could shatter his trust in relationships. When he joins ANBU, he may focus all his energy on his new duties. He could become more reserved and less of the exuberant Naruto we know. His skills would likely improve rapidly in ANBU, as he pours his heartache into his training. And over time, he might find a new sense of purpose and family within the ANBU ranks, gradually rebuilding his sense of self - worth.