what is wrong with me

I feel like there is something wrong with me. I love my husband. you can't help what you dream right? there has been 2 times this year that I have had dreams that I cheated on my husband. I have no intention in cheating on him. One dream it was my sister's boyfriend(who I dated when we were younger) the other was l astnight. the thing is the body hair and face was not mine when I looked in a mirror but it was for sure my husband who found out about "me" having sex with another man. I don't understand why I have these dreams. I can't talk to him about them because it would break his heat. he has had multiple dreams about me cheating on him with random people and he has told me about hos dreams. and I could see the hurt in his eyes. that's why I can't tell him about these dreams.