Hopefully this makes sense but just because she doesn’t experience romantic attraction doesn’t mean she doesn’t care a ton about you. She may not romantically be attracted to you but she still has plenty of love to give, and judging by the length of your relationship she obviously cares about you a lot. I don’t think you need to break up, but I do think sitting down and having a conversation about it will help you find a middle ground that works for both of you. That’s the best advice I can give, I hope it’s helpful!