What happened on the Gossip Girl season 3 Finale?

blair goes to the empire state building but shes late cause dorotas about to have her baby, so chuck ends up doing it with jenny. hes about to propose but dan beats him up. blair and serena end up going to paris for the summer. dan and serena kiss and he thinks he loves serena again. serena and nate break up. georgina is pregnant with dans baby. chuck goes to prague and gets shot in a dirty alley and his ring for blair is pried from his hands even though he was resisting. jenny goes to live with her mom.