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

Refusing to give up, Blair follows Chuck to Monte Carlo, declaring she is "all in" to help him win back his legacy. Serena’s "Old Roots" and the Ultimate Betrayal Watch Gossip Girl S05E24

However, Gossip Girl leaks Blair’s private diary, exposing her lingering, deep-seated love for Chuck Bass . This revelation leads to a series of high-stakes encounters: While Blair is busy choosing her future, Serena