IRWYTBM Share definition Flag An acronym for 'I really want you to be mine' used when shyly telling someone you want to date them. "I have a confession, irwytbm..." IRWYTBM by TheRealMemeKing January 29, 2017 0 0 Get merch Get the IRWYTBM mug. Buy Now — $32.95 See more merch