It could be that Peter did something really wrong and May couldn't tolerate it anymore. Maybe it was a betrayal or a violation of trust. Or perhaps May had her own reasons related to protecting herself or someone else.
Maybe they had a big fight or a serious disagreement that led May to do that.
It could be because of some deep-seated issues in the boyfriend's personality or past experiences.
Peter might be initially very nervous. He's been keeping this huge secret from Aunt May for a long time, and now that it's out, he's worried about how she'll react. He might stutter and struggle to find the right words to explain himself.
Peter could be really nervous at first. He's been keeping this huge secret and now it's out. He might stutter and try to explain himself, saying he was just trying to protect her.
In some fanfics, Peter might faint due to overexertion. He's often depicted as being involved in intense battles or using his powers to the extreme. For example, if he's been fighting a powerful villain for a long time without a break, his body could just give out and he faints.
In some fanfictions, Gryffindor might kick out Harry Potter due to false accusations. Maybe someone spread rumors that he was using dark magic or endangering the other students. It could also be a plot device to create a more complex and different storyline from the original, where Harry has to fight to prove his innocence and regain his place in Gryffindor.
Their relationship could become more strained. Aunt May might feel betrayed that Peter kept this big secret from her for so long. She might question his trust in her and this could lead to some arguments between them.
She might also be a bit angry that he didn't tell her earlier. She could feel left out or betrayed that he kept such a big part of his life from her. This could lead to some tension between them for a while until they work it out. She might make him promise to always be honest with her from then on.
She could also be very proud. Peter is a hero as Spider - Man, and Aunt May has always known Peter to be a good person. Now that she realizes he's using his powers for good, she might see him in a new light and be proud of the man he's becoming.
Well, it could be that Mineta was being his usual pervy self around the girls, and Bakugou, who can't stand such behavior, just snaps and kicks him out the window. Maybe Bakugou has been warning Mineta for a while, but Mineta doesn't listen. So in a fit of rage, Bakugou uses his explosive power to send Mineta flying out the window.
Peter might initially be in a state of shock. He could isolate himself from his friends and the world around him, constantly replaying memories of Aunt May in his head. He may also feel a great sense of guilt, thinking that he could have done more to protect her.