Snape's behavior could change drastically. He might become more protective of Harry if the secret was something that made Harry vulnerable. Or he could become more distant if the secret was something he disapproved of.
If Snape learns Harry's secret in fanfiction, his behavior would be greatly influenced by his own personal feelings and beliefs. If the secret was related to Harry's family, Snape's mixed feelings towards Harry's father could play a role. He might act more kindly towards Harry out of a sense of loyalty to an old memory, or he could be harsher if the secret somehow conflicted with his view of the Potters.
At first, Harry probably sees Snape as a cruel and unfair teacher. But as he learns the truth, he starts to view Snape as a hero. He realizes that Snape was on his side all along, despite the way he treated him.
His loyalty becomes more evident. In the original story, his loyalty to Dumbledore was somewhat hidden under his grumpy exterior. In this fanfiction, as Harry is learning to trust him, Snape's loyalty to the side of good and his care for Harry become more pronounced. He might take more risks to protect Harry and Hogwarts, and his actions are no longer so easily misinterpreted as malevolent.
Well, in fanfiction, when Snape discovers Harry's secret, it's like a bomb going off in their already complex relationship. Snape's entire perception of Harry could change. He might see Harry in a new light, perhaps as more of a kindred spirit than he initially thought. On the other hand, he could feel betrayed if the secret was something that he thought Harry should have shared with him earlier, considering Snape's position in the wizarding world and his role in Harry's life.
In the fanfiction, Snape's impression might make him more protective of Harry. He could start to subtly look out for Harry's well - being, whether it's in the face of other students' bullying or more dangerous threats from the dark side. This would be a significant change from their usually strained relationship in the original story.
His wife could be a former Hogwarts student he met during his own school days. She might be from a different house and they fell in love secretly.
In many Snape and Harry slash fanfictions, Harry often becomes more understanding of Snape's past and his motives. He starts to see beyond the grumpy exterior. Snape, on the other hand, may become more vulnerable and open. For example, in some stories, Harry's kindness breaks down Snape's walls.
Snape's view of Harry would likely become more complex. He might see Harry as more vulnerable than he previously thought. His initial disdain might turn into a sort of begrudging concern. He would realize that Harry is dealing with deeper issues than just being the 'Boy Who Lived'.
If she discovers some of Snape's old potions recipes or magical knowledge, she could share it with the Hogwarts faculty and students. This would not only improve the potions classes but also make her a respected figure in the school. And her presence might also make the students re - evaluate their views on Snape, which would in turn change the overall atmosphere at Hogwarts.
Snape might become more empathetic. After seeing Harry's memories, he could understand the pain and pressure Harry has been under. This new understanding might make him more protective of Harry in some way.
If Harry learned Star Wars basic in fanfiction, his understanding of power and its uses would shift. The Force has different aspects like the Light and Dark Side, similar to the concept of good and bad magic in the wizarding world. He might start to question some of the long - held beliefs in the wizarding community. For example, how they deal with dark magic. Also, his relationships with others could be affected. Some might be intrigued by his new knowledge, while others might be afraid or suspicious of it.