I mean, they're both hot, but they've got to be thinking "wow, I'd like a chance to have sex with someone not related to me someday!"

BWAHAHAHAHAHAHAHA! I see you have jokes.

Also, leave the beard alone. The beard is mourning and pining. The Beard is Emo. The beard began with the death of Peter's Emo hair, Nathan's carrying on the mantel until Peter comes home.