Hiden love

This novel narrateS a story of a woman's hidden love the author. The woman love the man very much,so she rather than to pay out quuietly. This novel based on the letter from the woman. The language is colloquial. I can experience the woman's  true feelings between the lines. she silently stay in the side of the man,but the man has nexer been take her in the heart , what a sad hidden love story.