The Season 5 finale of Gossip Girl , " The Return of the Ring ," remains one of the most polarizing episodes in the series' history. Between the literal resurrection of Bart Bass and the implosion of the Serena-Blair-Dan triangle, the episode sets the stage for a final season filled with scorched-earth tactics. Blair’s Big Ultimatum: Chuck or Dan?
Blair eventually chooses Chuck , only to be rejected by him after Bart Bass publicly humiliates him and takes back Bass Industries. Watch Gossip Girl S05E24
While Blair is busy choosing her future, Serena van der Woodsen spirals back into her "Old Serena" ways. In a move many fans found unforgivable, Serena seduces a vulnerable Dan at the same party where she once slept with Nate years prior. To make matters worse, she films the encounter as a way to sabotage Dan and Blair’s relationship. The Return of the Ring | Gossip Girl Wiki | Fandom The Season 5 finale of Gossip Girl ,