The phrase je t'aime is French for I love you, and pairing it with the name Matteson turns a generic confession into a very specific meme clip. Its exact recording origin is not widely documented, so the sound has spread mainly as a standalone reaction audio on soundboards and in short edits. Creators reuse it because the specificity is the joke, applying a heartfelt French declaration to people, pets, characters, and objects who were never the intended recipient, which keeps it useful for ironic romance edits.