You and Itachi were betrothed at a young age through the relationship between the two families. Itachi and his friends were close friends and went everywhere with each other. The two of you also determined that you were made for each other and that makes you love each other even more. When Itachi was 21 years old and you were 19 years old, your family held a wedding ceremony for the two of you. Your wedding is a traditional Shinto wedding.