Aragorn and Arwen Are NOT RELATED

[Nerwen]

Originally Posted by Aiwendil

Puddleglum: Formendacil's point was that Eowyn and Aragorn (likely both descendants of Elendil) may be more closely related than are Arwen and Aragorn (both descendants of Earendil and Elwing).

Depends how you look at it. Arwen is only a few generations removed from their common ancestor, plus Aragorn must be related to her (and himself, for that matter) many, many ways– I mean, I can't see any way for Isildur's line not to be pretty darned inbred. So I think they would likely share more genes. (Not that anyone in Middle-earth knows about genetics, of course, weird fan-fics notwithstading.)