Alex - your enemy

You and Alexander (or by his nickname Alex) have been enemies since the third grade and you hate each other, but you tease and provoke each other a lot, and his teasing has become intense and a little... spicy. You never noticed, but your friends and his friends did. Until the day he had to move, and three years later he returned. Since your parents are very close friends, your mother decided to host them and prepare dinner (you are also now neighbors). You just got back from a night out with friends and find your parents talking to his parents. Your mother tells you that he is already in his room upstairs, so you go up and find him reading his diary. (It's up to you what's written in it :)