At the start, Harry would be stunned. His whole life has been built on the idea of his parents being heroes. When he realizes they betrayed him, he would be heartbroken. He might go on a journey to find out the real motives behind their actions. Along the way, he could become bitter and vengeful. However, he might also find some inner strength and decide to rise above the betrayal. He could use it as a motivation to break free from the shadows of his parents and create his own path, but not without a great deal of emotional turmoil first.
He would probably be very confused and heartbroken at first. He might isolate himself from others as he tries to make sense of what has happened.
He might be extremely angry and confused. After all, parents are supposed to be the ones you can trust the most. He could start to question everything he knew about his family and himself.
However, in other fanfictions, Harry tries to understand the situation. He might be heartbroken, but he still has that innate goodness in him. He starts to investigate the reasons behind the betrayal, reaching out to old friends or making new allies. He hopes to find a way to resolve the situation and perhaps even forgive his parents if possible. This shows his growth and maturity as a character, even in the face of such a difficult situation.
He would be overjoyed. It's his parents, after all.
It could be that his parents were trying to protect Harry in a really messed - up way. They might have thought that by 'betraying' him, like sending him away or making him seem like an outcast, they could keep him safe from a much greater threat. Maybe they knew some prophecy about Harry and thought this was the only way to ensure his survival. They might have made a deal with some dark force, believing they could outwit it in the end but ended up being seen as traitors by Harry and others.
Harry would probably be deeply hurt. He has always considered Gryffindor his home in Hogwarts, so such a betrayal would be a huge blow to him. He might initially be in disbelief and try to find out the truth.
Harry might be initially shocked and heartbroken. He trusted the Weaslys like family, so the betrayal would hit him hard. He could become more withdrawn and distrustful of others.
He might be initially shocked. Harry has always trusted his friends, so when the betrayal happens, it would be like a bolt from the blue. He could stand there speechless for a moment, unable to believe what has just occurred.
Harry would likely be deeply hurt. He has been through so much already, and this betrayal would be like another stab in the back. He might initially go into a state of shock, not believing that someone he loved could do this to him. Then, he would probably become very angry. His trust would be shattered, and he might lash out, not just at her, but also at those around him who he feels might have known or been involved in some way.
Harry may also get angry. He could lash out at the person who he believes has betrayed him. For instance, if it was Ron, he might shout at him and say things he doesn't really mean in the heat of the moment. This anger would be a result of his deep - seated hurt from the betrayal.