If you really like Katie, you should try talking to her. If you don't even try talking to her, she will not know who you are or anything about your character. But feelings between a couple have to be recipocrated for them to be together. Right now Katie thinks that you are very quiet and she probably doesn't even notice you. Even if she finds out that it's you who wrote those letters, she may not want to be with someone whose personality is completely different from hers. Maybe it's hard, but you should try coming out of your shell. If you don't try, they won't know you. Maybe you should try putting your feelings aside and treating her as a friend. The opposite sex can be a friend, and just treat her like how you talk to xavier and andy, and maybe with that, you can change some things.