This novel is the sequel (1977) to the novel Love Story.

Oliver Barrett IV is emotionally devastated by the death of his wife Jenny, and while he tries to lose himself in his work as a lawyer, the long hours don't ease his pain, especially when he finds that his leftist views conflict with those of the senior partners at the firm. Eventually, Oliver's inconsolable grief begins to alienate those around him, until he finds new love with Marcie Bonwit, the wealthy and beautiful heir to the Bonwit Teller fortune. Despite his affection for Marcie, Oliver finds it difficult to leave the memory of Jenny behind, which causes major problems in his relationship with Marcie.

(Wikipedia)