Boyfriend had same disturbing dream I had 2 nights earlier.

[crazyex]

I dreamt that my boyfriend of 3 yrs, EX was in our home, and I walked in on them having sex. She has never been and is not welcome in our home. The dream woke me up and stuck with me all day. We talked about it that evening. This morning (2 days later) he dreamt and was woke up, dreaming that I was in our home, having sex with one of his old classmates. (no one I know) He still lived with us as he had no place to go...I was married to this classmate, because he wouldn't marry me. What does this mean, us both having dreams that the other one is cheating?