Hi there, K. Hey, we all become a little too obsessive over things some time or another. I don't say things to get down on you or anyone else but to help because I care. So, please, don't get down on yourself so much. Everyone goes a little overboard sometimes, but it's just something we've got to learn from and move forward from. It's a learning process, and we all go through it.
It's okay to have fun and pretend to put up posters. There's nothing wrong with that. I only posted my message above to remind people to not let their obsessions go overboard and get the best of them. Saying things to the effect of: not being able to live without Erik / his music / etc. or wishfully longing he were here or other things to that effect is, for lack of better terms, silly and should probably not be said, for multiple reasons. (Not that you said any of these, but these are just examples.) However, leaving a little note like this for him to see later is fine:
Just try not to let things become too overdramatic, that's all.
And, no, you're not a "weirdo." If that were the case, then we would all be "weirdos" because I'm sure all of us have had some type of obsessive phase in our lives, haha.