Do my dreams mean something more?

So about every couple of weeks sometimes more than once a week i will have these dreams that my boyfriend is cheating on me. We have been together for 3 years and although i have caught him doing some sneaky things behind my back hes never actually cheated (that i know of) ive always heard that dreams sometimes mean something to us subconciously but im not sure why i have them so often? Is he cheating on me and i subconciously know about it or am i just being paranoid?