Don't tell us that you weren't crying during the phrase in Avengers: Endgame you see in our fanart I Love You 3000 Sticker. Ever since this epic MCU movie was released, the internet has been collectively sobbing over the stand-out moment involving Tony Stark and the now-iconic line I love you 3000. There was even speculation that it could have a deeper meaning that links to the run-time of all the movies in the MCU.