Serena is pretty infuriating this week, first overstepping again with Rufus while wearing a sweater that exposes her belly button. Meanwhile, she's so naive about William, a man she essentially just met. I do feel sorry for her when he abandons her yet again, but oy, Serena (btw, I still don't believe that Lily was even sick when she first visited William).
Anyway, interestingly, it's Dan who finds Serena in the lobby when William takes off, and then acts as her literal shoulder to lean on. Is that a glimmer of a reunion for season one's golden couple?