Not sure if right group, but recently I've been having dreams about my ex

We have not spoken in over a year. I do not want him in my life anymore. 6 years off and on TRYING to be friends with a narcissist after separating in 2016 is enough. I stopped talking to HIM altogether in June 2020. I blocked his phone numbers and fb. I just had enough. Recently he's in my dreams. We are not together or trying to be together. It's just weird that he's even in them. I know you can't control your dreams and it probably means nothing, but it's driving me crazy. I honestly wish I could undo all those years with him.

What is your opinion about my dumb dreams?