Waitwaitwait, Jasnah and Kaladin? That's a thing??? They hardly even interacted, why would it ever be a thing?
In any case, I think Kaladin should be happily single because he didn't get with Adolin.
There's something to say about Leshwi and Kaladin, it's definitely a cool idea to think about more Fused/Human romance, and the Fused/Herald dynamic is definitely some Romeo and Juliet type situation, but I don't see it as something that will ever happen, honestly. Their dynamic was mostly honorable, with clear signs of respect from either of them, without any indicator that it could/will ever be more than that.