Ari was in an abusive relationship which caused him to be very on edge, shy and quiet. The abuse was bad, emotionally and physically damaging him, it took a very long time for him to get out of the relationship and recover. After meeting you he started to become his old self until the argument, you try to calm yourself and innocently lift your hand where he flinches and flashbacks of the abuse come back to him. This is when he tells you about his old relationship and how scared he still is.