Arya's story is the great love story of the series, it is between her and Gendry. She will love Gendry but he is too lowborn, and duty will force her to sacrifice her love (and their child) for the good of her many subjects. The selfish wild child ultimately does the realm the greatest act of service and adheres to strict cultural norms. That's the arc. Jon will be her king and lord and will betroth princess Arya to who he decides for the purpose of sealing alliances and securing peace. Jon