A clip relationship refers to a romantic storyline that is developed, sustained, or resolved primarily through the use of flashbacks, montages, or "previously on" recaps, rather than through linear, present-day narrative. While traditionally used for exposition, the clip has evolved into an emotional shorthand that can manufacture longing, rewrite history, or deliver a tear-jerking reunion in under ninety seconds.
Full narratives contain boredom. They contain scenes where the couple fights about chores, or misunderstands each other for three episodes straight. Clip editors remove the "realistic" friction and leave only the aesthetic friction—the longing looks, the witty banter, the brush of hands.