He called that a romance? I mean they got together in the end but I’m not sure it qualifies as a romance, they don’t even talk hardly.
Aragorn is on a seemingly hopeless quest -- to defeat Sauron, and restore the kingship of both the southern kingdom of Gondor, and the northern kingdom of Arnor. If he achieves these amazing feats, he will be allowed to wed Arwen. He takes on the hopeless task because of his great love for her.
This is an echo of the story of Beren and Luthien (who are ancestors of both Aragorn and Arwen). Beren is a man, Luthien is an elf. They can marry only if Beren can take a great jewel (a silmaril) from the crown of Morgoth and brings it to Luthien's father (Thingol). This is a hopeless task. But Beren never hesitates -- because of his great love for Luthien.
Tolkien was very big on the idea that men can do impossible things because of the love they feel for a woman.
My wife and I have been together 21 1/2 years. We hardly talk. Maybe that’s why......