Dreams about cheating?

Okay, I need some serious advice. I’ve been in a loving and healthy relationship with my boyfriend for over 9 months now. I have no control over my dreams whatsoever, and every now and then, I’ll have a dream about having romantic and sometimes even sexual relations with celebrities or people I don’t even know or recognize. I have no desire of leaving my boyfriend or cheating on him. Is this normal for anybody? What does it mean?