Had an incest dream, husband is into it, expect when he’s not. Help?

Let me start by saying I don’t have any sexual feelings about my father, never have; I wasn’t ever abused or any of that stuff.

So I Had a sex dream about my father a couple months ago, And in the dream I wanted it for some reason and really enjoyed it, I even woke up wet. Told my husband about it and I thought he’d be freaked out but instead he wanted me to describe the dream in detail and eventually ended with us having sex while I continued to describe the dream.

After he got out of the shower I asked him if he was into incest and he said of course not and now was suddenly repulsed by my dream and said not to mention it again. Fast forward 3-4 days (usually how long it takes for him to want sex again) and he’s texting me from working asking me to describe the dream again in text, and that he wanted to role play the dream when he got home.

I said ok i guess, he even wanted me to call him my fathers name while we had sex. Then again, once he finished he was completely disgusted by the idea and told me he wanted us to forget it ever happened. This cycle keeps repeating itself everytime he’s horny/finishes. I’m starting to blame myself for telling him about this dream. We are both 28 and have been together since we were 18. Just not sure why the obsession with the dream, he actually doesn’t even like my dad, they’ve never gotten along, but from what I’ve read online it’s most likely not about the person but about the taboo of the act he’s into? Would you folks consider this a problem?

Tldr;had nsfw dream about dad, husband likes it when he’s horny, disgusted when he’s not.