Uchiha Sasuke has the strange habit of dating anyone who asks him out on Monday for exactly one week, before breaking up with them on Sunday if he doesn't grow to love them. Then Uzumaki Naruto comes along, asking Sasuke out on a whim and never imagining that he would be taken seriously. Just how long is one week? Is it truly long enough to fall... in love? SasuNaru, highschool!AU.