My fantasy to have sex with an ex was fulfilled but, what do I do now?

So not to long ago I fucked an ex and for a minute I was like okay I can move on from him cuz I wanted him for so long an I thought that's all I wanted from him but back when, I was obsessed like I wanted to know everything about him my friends would tell me no not him but it made me want him more him to me was everything the way he made me feel I felt actual butterflies his eyes his smile I just wanted him to be mine but i almost had him once but didn't go well. So whenever I did see him or heard about him i would try an keep myself focused an tell myself things my friends told me about him to try an forget but whenever I do he comes back or someone starts talking about him.

The thing is I'm married now an us having sex was for a kink/sex thing my husband wanted to try. He was upset more at me then him cuz we did it raw. An he didn't want to touch me for a good moment. Ever since I can't get him out of my head I want him but I also want my husband.

My husband is a perfect person he loves me takes care of me. Appreciates everything I do an tells me an makes me do better. I even had a dream about him before we met. An it's been about 2yrs since we first met an it doesn't even feel that long.

This is just all over the place so just to keep it short.what should I do? I think I still have feelings for him?