how to stop dreaming about ex-crush

Chat, I'm fucking doomed.

It's been years now since high school and I still dream about this mf I had a crush on.

Personally, logically in my mind rn, I don't like him anymore, but in the dream, it be feeling so god damn good to interact with him and flirt and shit. But funny thing is, even my dream self is aware she ain't supposed to be happy flirting with him.

My girlfriend says this is cheating but bruhhh what can a bitch do I can't control my dreams. How to stop dreaming about the ex-crush? Any dream spiritual experts here? I'm atheist so pls help expand my spiritual output to put an end to this dream cheating thing. I don't wanna be a cheater ╥﹏╥