One thing I'd be curious about for you, if you'd be open to it, would be looking for someone in the poly community. Obviously people in the poly community tend to be on the more sexual side of the spectrum, but not all such people are always exclusively about sex. Counter-intuitively you may be able to find someone in that community that can go your speed, not because they live at that speed naturally, but because you aren't their only outlet for that stuff, so they may be fine with you being just a romantic partner. And there's no reason you need to have multiple partners, so long as you're okay with your partner having multiple partners.

The most obvious risk is if you're romantically jealous, besides the more obvious sexually jealous. That may be a deal-breaker. And if you're looking for someone to be with you at all times, that's probably not going to work either.

But if you approach it was openness and a "what have I got to lose" attitude, you may be able to find some low-pressure companionship!

Quick note if you look into it: you may see the term "solo poly". And you may think this either means a poly person currently only with a single partner, or maybe a poly person that is currently unpartnered. These would be good guesses but also wrong! Solo poly is a person who essentially has relationships with other people, but always secondary to their relationship with themselves. Effectively they're not looking to move in together or "get too serious" or whatever, just dating, and they maintain a "solo lifestyle". This doesn't have to mean nothing is long term, it doesn't have to mean it's only casual hookups, but if you're looking for a life partner or someone to wake up next to every morning or do taxes with, this isn't their vibe.

Good luck!