Serena: "So if you just think I'm this dumb whore anyway, why were you so controlling and judgmental throughout the entirety of high school?"
Dan: "It's not like you're really a person, Serena. Don't be mad just because I use you as a repository of my own faults and wishes and then condemn you for not living up to my fantasy."
Serena: "That is the story of my life, but reading it in words really hurt. I thought that doing what you said would make me a better person, and it has. But what is that worth when you won't continue to validate it for me?"
Dan: "Because it's not about you, Serena. It never was. As usual, it is about me."
Serena: "Explain further."
Dan: "Dylan Hunter is a judgmental dick who can't even look at himself in the mirror. My character comes off the worst of all of them. He puts off his writing, he misses job interviews, he ignores his grades. And why? Because he cares more for a pretty blonde than he does his own future, and in the end, none of his friends are happy for his success. They all turn their backs on him, and he deserves it."
Serena: "Wow, you really don't think much of women at all, do you?"
Dan: "There has never been a point at which I wasn't making that abundantly clear. I'm just the cutest guy on the show, so you overlooked it because you identify with Blair and you want me to marry her-slash-you and kiss her-slash-you forever and ever, and have that be the entire show. Which, speaking of..."
Serena: "No, Dan. I'm really upset."
Dan: "I don't care. See how that works?"
Dan: "Plus, Blair's in trouble, and since she has no accountability whatsoever, I have to save her from her own decisions again. Just one of the many paternalistic favors I don't have to do for you anymore."
Serena: "You have ruined both of our lives, potentially, but I guess I see where you're headed with this."
Dan: "If you don't understand that my feelings and Blair's fake marriage are more important than your self-image and career, maybe you're just the drunk whore I said you were, over and over."
Serena: "That sounds exactly like something Dylan Hunter would say."
Dan: "Um, yeah. You know why that is, right? Do I have to explain the whole thing again?"
Then, that scene with all the people from the beginning of the episode, only it is real.