Floor creature

I know that I said I'd never be like anyone else, I'd always be true but
I can't take back what I did. And now I'm one of them who I don't like to be grouped with, I was better but now I'm worthless because of that night.
I thought I was always the night guy, but now I see that I'm just as bad. Every now and then I try to pretend that
I'm still the guy who knows what's right and not another friend, once again. I can try and try, but I can't take back what I did.
And as I lie and lie, I still cannot fit in.