Gossip Girl (2007)

S5E15 Crazy, Cupid, Love

Title: Crazy, Cupid, Love Plot: On Valentine's Day in the Upper East Side, Blair is determined to play matchmaker for a dear friend. However, Georgina has her own plans to create chaos and shows up uninvited to Nate's Valentine’s Day celebration. Amidst the festivities, Serena is taken aback by an unexpected revelation she encounters at the party.