What's going on with my head?

So last night I had a vivid dream about going to my now married ex's house bc he called me over. He told me how he regretted cheating and was willing to divorce to be with me...except I'm in a relationship and have been for 2 years that's going amazing and im happier than ive ever been. His mom came in and told him that if he wanted me shed help with the divorce and I was like "what is going on im engaged are you crazy?" After that I woke up. Ive dreamt about him twice in the past week and it's weird as check. The time before that I asked him why his mow wife hated me so much even though I hadnt done any wrong and me and her were friends before me and my ex split up. Do these dreams mean something? Is there a way to not think about them? We split up in 2016 after 11 months together bc he cheated and wanted to stay with that girl. Is it normal to dream of your ex 2 years later when you're happier with the person you have now?