A Gaara love story: 3 years passed

After meeting a girl saved him from dying,he swore to never forget her. Leaving him with only a faint memory of looks and a loss of a name Gaara goes on with his life.When duty calls at the Sand village's capital as Kazekage 3 years later,Hikari is assigned to be his escort. She seems to be entirely different and gets on his easily gets on nerves. Why does she make his mind a mess?