Mario is thought to have proposed to Fanny close to where the Italian team are currently staying in Brazil before announcing their happy news on Twitter.
Alongside a picture of Fanny's stunning engagement ring and a picture of where he popped the question, Mario declared his love for his new fiancée.
Mario gushed: "She said yes.. The most important yes in my life. That was the place of my question! I Love you and happy birthday too ! Je t'aime my WIFE."
AC Milan player Mario and Fanny have been in an on/off relationship for several years, but it's clear they are DEFINITELY on now!
Prior to their engagement announcement, the couple shared a funny picture of themselves with their hands over each other's mouths. Trying to keep a secret, guys?!
Mario will first take to the pitch on Saturday (14 June), when Italy go up against England.
Couples who have got engaged in 2014:
Copyright: Instagram kayascods