I keep dreaming of the same guy over and over.. what is the meaning of it?

I have a great boyfriend and we've been together for 3 yrs. already. However, I have always been pestered with dreams of a different guy I met the guy 2 yrs ago! And even if i very seldom see him in person, he's always in my dreams as my groom/bf/hubby/lover! I don't know.. I know the guy is really attractive but I'm already inlove with my current bf. But what does my dream mean? I'm really confused...Is the dream only a dream or should I take a risk and give the other guy a chance? help!