Les Bonnes Choses

I was remembering this afternoon that I had a dream last night in which I stole something from someone for personal gain. I believe that, in the dream, I tried at one point to rationalize what I had done by claiming that the person from whom I stole didn't really want what I had stolen anyways. But I knew it was wrong in the dream, because I also vaguely recall trying to hide the fact that I had taken something. So today as I reflected on this dream, I kept feeling guilty, despite never having actually done anything wrong. I think it's the thought that I could be the sort of person who would steal from a friend. Is that irrational?