aragorn
Frodo's relationship with Aragorn? Well, it basically.. nothing. They meet, talk a little. Well, they first meet at the Prancing Pony in Bree when Frodo is with Pippin, Merry, and Sam. With the whole Ring falls on his finger thing happens. yeah. They then travel with the whole fellowship then get seperated, then in Return of the King meet again. Frodo bows to Aragorn, because he is King of Gondor, but Aragorn merely shakes his said, "You bow to no one." And then everyone at Minas Tirith bows. Yeah, they are basically acquaintences.