I am married but having dreams about ex-boyfriend

I have been married for nearly a year, but i started having dreams about my ex.. At first, I thought they were just remnants from our long and intense relationship, and my subconscious still didn’t get updated to my new status. the dreams made me very uncomfortable, like I was cheating on my husband, i was very relieved to wake up without those dreams, and even more so when i had a dream about my husband, but those tend to be short and uninteresting...