He said he used to be hurt by a marriage. So he does not want a marriage any more. But he doesn't want the girl leave him. He said he can give her whatever except marriage. He said he will keep promise to take care of the girl forever. But one day, the girl found he still kept touch with some other girls. He jsut said it is very normal contact when the girl asked him. She almost crazy when she got a chance to read some of the letters they sent to each other. They are all affection poems. But the boy blame her for lacking trust.