``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 to my childhood friend when I was young. However, the childhood friend I met again is a housewife who is already married and has a child. ``I've been waiting for you for a long time,'' she says with a lonely smile, and she has sex with her just once, which she wasn't able to do at that time.