This was perhaps by far the best episode yet.
This is what truly happend: Serena was having sex with that guy back in the days when she was crazy and the man ODed on her, she didn't do anything at all and probably thought she killed him. Now for G, she got S to let her film them having sex. For the episode 17 preview: the guy kissing S is from the sex tape and Serena says "yes" to Dan when he asks her because she doesn't want him to know about teh whole thing. Reactions? You know you love me, xoxo