There must be a nice top out there for you!

But to answer your specific question, I feel like where there's love, there tends to be a way.

I suppose if both guys involved could at least bring themselves to top sometimes, that would go a long way!
Personally, I'm partially in that situation and trying to see if I can become at least somewhat versatile and start to enjoy topping. (Even though the relationship in my case will definitely not hinge on that.) I think I'm making some progress. Fingers crossed, haha!
Being polyamorous, in the specific scenario you've described, I'd probably be inclined to look for a top to add to the equation who likes you both and vice versa so everyone can be happy without the need for anyone to change.
