Avril is a fake(as are most celebrities who are female). This cannot be normal. Perhaps you should seek counceling for this unhealthy obsession.

Yea shes the biggest poser female out there and fallout boy is the biggest male posers!! can't stand those damn bands

Yeah, it's normal, but that doesn't make it right.

You should try out for "My Own" But damn, they already had an Avril obsessed guy.

how exactly does fall out boy pose? i totally agree with you on the topic about avril ( shes wasting her voice on that crap) but fall out boy is not a poser band.

If you're only putting posters of them up and not, like, following them to their houses, breaking in and stealing their underwear then I don't think you're obsessed. You don't have a problem. I can't be sure, though. Because I'm only judging from what you've said, not how you might feel. Some posters on a wall does not make you obsessed. I have loads of Kurt Cobain posters but I'm not obsessed. I don't feel that I need to be near something of his, that I can't live without him. Which, I think, is what an obsession is. You can live without Ms. Lavigne, can't you?