The Marriage Plot by Jeffrey Eugenides

A love triangle that developed when the novel's main characters were at Brown University complicates things as the young people try to find purpose and direction in life. One is bumming around Europe, one is in biology, and one is a scholar of Victorian literature. The book is packed with literary references which makes it enormously fun if you're an English major, but which might put off others. This English major thought it was a terrific read.