Having dreams about the wrong person!? Help!?

I was in love with this guy for like 9 months. Then we broke up and I have a new boyfriend now, and I'm very happy with him. Every once in awhile I'll have a sudden thought about him, or a dream. It really bugs me because it took so much to move on. I wouldn't worry about it- it could just be pent up feelings that you're dealing with through dreaming. But if it progresses and really starts to bother you, I would consider telling your current boyfriend.