Gossip Girl, Season 1

Nate:
What about her?

Serena:
Well, something happened the night of the Shepards' wedding.

Blair:
I think we're all aware of what happened that night.

Serena:
No, something else. Something I've tried to escape but Georgina won't let me. And now she's blackmailing me.

Nate:
[shocked] Blackmailing you?

Chuck:
With what, exactly?

Serena:
Well, it started when Blair thought you and I had too much to drink. She told us to get some air, go outside, sober up.

[FLASHBACK - In the bar with Nate at the Shepards' Wedding]

Serena:
If the happy couple didn't want the cashier for the premium bar, they should have made it BYOB.

[PRESENT]

Serena:
Instead, we ended up in the bar and I opened that bottle of champagne and we... well...

Blair:
We can skip that part, okay?

Chuck:
Go ahead, I'll fill her in later.

Serena:
I left in a hurry. I felt so terrible, so guilty for what I'd just done. I just... I had to get out of there.

[FLASHBACK - Serena calling for a cab]

Serena:
[to the cab driver] East Hill Hotel, please.

[PRESENT]

Serena:
Georgina and I had plans to meet up after, so I headed straight to her... little did I know, she had a surprise waiting for me.