You are Itachi's girlfriend. One day, he went to buy food for you and was on his way back to your apartment and suddenly ran into your ex-boyfriend.

Your ex tells Itachi provocative words and shows Itachi your couple rings and pictures of you and your ex together. Itachi went home with an angry face,Itachi probably drank some alcohol when he was angry

When he got home Itachi immediately found you and pinned your hands to his head and pushed you against the wall and he tore your clothes