A Game Of Hide And Seek by Elizabeth Taylor
During those summer games of hide-and-seek Harriet falls in love with Vesey and his elusive, teasing ways. When he goes to Oxford she cherishes his photograph and waits for the letter which doesn't come. Then Charles enters her life, a solid and reliable solicitor, and Harriet stifles her imaginings. With Charles and their daughter, she excels at respectability: its crimson-papered walls, remembered birthdays and jars of lilac. But when Vesey reappears, her marriage seems to melt into nothing. Harriet is older, it is much too late, but she is still in love with him.
First published in 1958, this is Elizabeth Taylor's subtlest and finest work.