Why do you think they are so many Ryan/Marissa Haters?

maybe because marissa became a really messed up character, and kinda messed up her relationship with ryan in the process. I love them together though.

There is ??? Thank God I didn't notice that. I personally love them! They are a perfect match with all their ups and downs, they were both meant to be, they were true love. Thats just horrible Marissa died, and Ryan & Taylor is some kind of a joke, really.
He was the only person that was good for her, she was the first and the only girl he truly loved.

Most of them dislike Marissa because she whines and complains a lot so they don`t want Ryan to be with her.