Well, a common ending is that they form a strong platonic bond. Naruto has always cared for Sakura, and Sakura comes to fully appreciate Naruto's selfless nature. They end up as comrades protecting the village, with Sakura being Naruto's trusted advisor in matters related to the well - being of the villagers, especially in medical aspects.
In some fanfictions, Naruto and Sakura might actually fall in love. Maybe after Sasuke's departure, Sakura realizes that Naruto has always been there for her. Naruto, on the other hand, sees Sakura's growth and beauty not just on the outside but also her strong will. They start a relationship and get married, having a family of their own and living happily in the Hidden Leaf.
Another ending could be that the trick goes on for a long time. Naruto gets really hurt and starts to distance himself from both Sasuke and Sakura. Sakura, on the other hand, finally realizes what Sasuke is doing and she decides to leave Sasuke. In the end, Sasuke is left alone, regretting his actions, and Naruto has to heal from the emotional damage on his own.
In many Sakura Naruto fanfics, Sakura is often depicted as a strong - willed character. She uses her medical skills not only for healing but also for strategic purposes during battles.
On Naruto's side, he would probably feel guilty after realizing what he had done. This guilt could make him try to make amends, but Sakura's initial reaction of anger and hurt would still be a big obstacle in their relationship. Their interactions would be filled with tension and awkwardness.
One possible reason could be that she might have underestimated Naruto in the past. She often belittled his abilities and dreams, but as she grew and realized his true strength and determination, she felt the need to apologize for her previous behavior.
One possible motive could be jealousy. Maybe Naruto has achieved something that Sakura desires, like getting more recognition in the village. So, she decides to frame him to bring him down a notch.
In proper fanfics rather than 'lemon' ones (as 'lemon' implies inappropriate content), Naruto is known for his never - give - up attitude. He's the heart of the story, always trying to bring Sasuke back and protect his friends. Sasuke is a complex character, with his family's past haunting him, which makes him seek power and revenge at times. Sakura, she starts as a girl with a crush but evolves into a capable ninja. These characteristics are often the foundation for fanfic authors to create interesting stories that don't involve improper content.
It could be Sasuke. If Sasuke has some sort of newfound connection with Naruto and it causes Naruto to shift his focus away from Sakura, then Sasuke would be the cause. For example, if Sasuke and Naruto team up for a powerful mission and their bond deepens in a way that makes Naruto neglect his relationship with Sakura.
In some fanfics, Naruto may ignore Sakura because he has his own emotional traumas to deal with. He might find Sakura's presence a reminder of things he wants to forget or move past, so he chooses to keep his distance. For example, if he has faced a lot of rejection from her in the past, he could decide to just cut her out of his life.