well.. it is airing again this sunday at 6pm .. if that is any help. =]
anyway.. here is some of the stuff that happened
.. lily and rufus slept together, but lily still married chuck's dad
... chuck and blair got together, but they kinda went separate ways in the end
... serena told dan about georgina, and they broke up
the episode ended with nate and serena hanging out, and dan and vanessa hanging out.