Friends (1994)

S4E7 The One Where Chandler Crosses the Line

Chandler faces a tough choice as he shares an electrifying kiss with Kathy, the woman he's always longed for. This unexpected moment leads to tension when Joey discovers what happened and is understandably upset. Meanwhile, the group grapples with the challenge of breaking the news to Ross about his less-than-stellar piano skills, which no one seems eager to address.