Fatuated Share definition Flag When an obese person falls in love with someone who has a healthy BMI. Usually their love is unrequited. "Dude that fat chick totally wants to suck on your corn dog - she is totally fatuated with you bro" Fatuated by indianreservation September 3, 2016 0 0 Get merch Get the Fatuated mug. Buy Now — $32.95 See more merch