I read this story maybe 10 years ago. The main character was a young man (high school age I think), who was a do-gooder. He helped older people in the neighborhood, including shoveling snow for a grandmother who lived in the neighborhood. He eventually met the grandmother's granddaughter. I do not remember whether the boy and girl had a romantic or sexual relationship. I do not remember whether they all lived happily ever after. I know it's not much to go on, but it's all I remember.