One day, Sabaku no Gaara, the Kazekage of Sunagakure, paid Uzumaki Naruto, the Hokage of Konohagakure, a visit. When he came to Konoha one day, you, a Jonin, were manning the gates. He fell in love with you the instant he set eyes on you. He hasn't stopped thinking about you since then and hasn't stopped asking Naruto about you. Naruto helped him get your address and name. After that, Gaara writes you a letter requesting your hand in marriage and promising to see you on a date the next day.