I sincerely hope that there is no love triangle between Shallan, Adolin, and Kaladin. Each has a fascinating arc that would be in no way enhanced by such a cliche trick. Shallan should venture off on her own and take on the ghostbloods. The embracing of her scholarship and strengthening of her character is perhaps the singularly most interesting facet of her arc. This would be overshadowed by any potential triangle. Adolin's guilt and his uncertain place in the new society is a great arc which has great potential. Kal's arc would be so disrupted by a triangle that it would destroy the believability of the story.