I dreamt of cheating on my boyfriend?

I've been with my first boyfriend for nearly ten months and despite a few problems (we're both struggling with bits of our lives lately and we're in a distance relationship) we're going strong. However, last night things came to a head in our relationship and I felt angry and upset with him for letting me and his family down again - he has chronic fatigue syndrome but this can only act as so much of an excuse for his sheer forgetfulness and lack of an attention span. I vented at him and went to sleep feeling furious and hurt and I ended up dreaming of cheating on him with a guy I know. This guy was of interest to me even in the early stages of my current relationship, I won't lie, but I never pursued anything and we remained good friends. I moved on and, to be honest, my feelings for that old crush are still a little muddled, so I was almost bitterly pleased when he was pursuing me in my dream for some reason. I didn't react to spite my boyfriend but for some reason I really couldn't help myself and I felt very little guilt in the dream and barely any now. The thing is, I despise cheaters. I'd never really do it as I believe everyone deserves better than that, but should I be giving any weight to this dream?