Ok so I had a dream I was cheating on my fiancee and woke up at four in the morning, I fell back asleep and had a dream she was cheating on me. Now so far in my 4 year relationship with her I had only 1 other dream I had cheated on her while I had maybe a dozen or so of her cheating on me. She also has dreams of cheating on me or me cheating on her. I never had dreams like this before in past relationships however my last girlfriend did cheat on me. Is this normal? Why do we think or at least dream about cheating on each other. For the most part we have a really good relationship. Any insight would be appreciated because my dreams are getting more and more weird and realistic.