What is the theme in Love Story by Erich Segal?

The main theme of this book as the reader may have guessed from the title is the relationship between lovers. The bulk of the main plot line revolves around Oliver and Jenny. Oliver is a confused young man, who has spent his entire life trying and failing to be better than his father. When Oliver meets Jenny, a girl who does not feel pressured to be better than anyone, Oliver finally finds a place where he can be who he is without feeling as though he is inadequate. Oliver and Jenny quickly fall in love and get married, giving up Oliver's wealth as well as Jenny's anticipated trip to Paris to study under a well-renowned music teacher.