Friends (1994)

S4E5 The One with Joey's New Girlfriend

At Central Perk, Chandler makes a move on a woman, unaware that she is Joey's latest girlfriend. As he becomes increasingly smitten with her, he grapples with his feelings of attraction. Meanwhile, Ross and Rachel engage in a playful rivalry fueled by jealousy in their respective romances. On a different note, Phoebe is on a mission to catch a cold, convinced that her singing becomes more alluring and her voice more appealing when she has a bit of phlegm.