Potential Future Husband Issues🤪

Hey y'all! Soo... I'm 23yo & I have a boyfriend. He's a church going man (very into church), has an old soul because he was raised by his grandparents & the sweetest!😍☺️ Recently I brought up the topic of sex stores & sex toys cause of what we were watching that day (side note: both of us aren't sexually active). He cringes when this topic come up 😂 however we were talking about if we were to have sex (after marriage since he wants to wait which is fine with me) & he said he wants to keep sex simple meaning one position, in & out and that's it.

I'm an open minded person so I don't mind trying new things when we get to that point but he is not having it. Also he said no to oral too & I want to see what that's like😭 He jokes around saying I might as well leave him, but I'm not doing that. I feel like later down the line he might change his mind, but idk because he can be very closed minded sometimes. So how do I help him change his mind?