``If I don't get married by the time I'm 30, I'll marry you.'' I still carry in the back of my mind the promise I made with my childhood friend when I was young. However, the childhood friend I met again is already a housewife with a married child. ``I've been waiting for you for a long time,'' he says with a lonely smile, and he has sex with his childhood friend, who was unable to do so at that time.