Question away from the public

Ok, I have a question but can't post it on my site due to the fact that certain people read that blog and I don't want them seeing this. So here goes.... If your in bed with someone (significant other type of someone), but you end up having a sexual dream about someone else, does that make you a scumbag? I don't think it does because I can't control my dreams, but I sure feel like one. Nothing like having crazy monkey sex in a dream with an ex- only to wake up to your current girlfriend lying next to you. So whats the popular opinion?