英语翻译(有悬赏)

There is a story.A high-schoolboy and a high-schoolgirl.They were fall in love with each other.But the love without expression.Before every exam,the boy always took penils away from pencil-box of the girl.And then made it cut puting back.But before one exam,Boy didn't returned back.Girl felt surprised and she went to look for her pencil in his.As a result,she find a paper which was written that "My love for you 21g".The girl became angry because his mean.So she became non-anwser to him.Few days later,She hadn't seen him any more.After graduation,the girl went in a university which she satisfied.And then she was fall in love with another boy.But they broke up with a serious dispite.The girl was 'walking in campus.She went to cinema.The name of the movie is"21g".In the movie,a man talked to an woman,"In western,after a human dead,life would lose 21g.At that time,the girl understood that the boy's "21g" stood for his LOVE for her.The g