It seems like there are a lot of thoughts that a relationship with Syl and Kaladin isn’t possible due to him being physical and her being a spren but doesn’t that ignore that the more the bond is formed the more possibilities it allows for? Also, what about the concepts behind type 1 entities? If spren are type 1 entities and the nahel bond is about mutual growth and much of the story arc is about growth, couldn’t Kaladin and Syl grow so much within the nahel bond that they no longer need it? Not that they break the bond, but they transcend it?
And not so much that this is pure romance but that they grow so much as individuals that they don’t “need” each other for growth or anything but that they choose to be together? A romance defined by growth and choice rather than raw emotions developing a more complete form of love than typically achieved? It would be an interesting way to allow for them to be together and make an interesting and more full implementation of a married couple. This also would have parity with the ending of the book the Nightmare Painter Brandon wrote