I ship Rysn and Shallan. They're both determined young women, learning about the world and experiencing things for the first time. I think they would be really cute together; in better times, they might have traveled the world together with Rysn as a merchant and Shallan as a traveling naturalist. I doubt it's going to happen but it would be really nice if it did.
Also, Jasnah is absolutely a lesbian. I have good instincts about these things. I don't know if we've met her girlfriend yet but we will, and she will be awesome.