The most prominent entity matching this title is the 2021 holiday film Mistletoe Mixup . Synopsis & Plot Core

: A character intends to kiss their crush under the mistletoe but accidentally kisses someone else (often a rival, a complete stranger, or the crush’s sibling) due to dim lighting or identical clothing.

: Used in small-town holiday books where characters return to their roots and are forced into awkward "mixups" or shared events with former lovers. Why the Trope Works

It provides an immediate, low-stakes catalyst for physical proximity and emotional vulnerability.

: Like many holiday specials, it relies heavily on classic misunderstanding arcs and love triangles.