A Life in Men by Gina Frangello. The book is being released by Algonquin Books on February 4, 2014.
Amazon says this about the book: The friendship between Mary and Nix had endured since childhood, a seemingly unbreakable bond, until the mid-1980s, when the two young women reunited for a summer vacation in Greece. It was a trip instigated by Nix, who had just learned that Mary had been diagnosed with a disease that would inevitably cut her life short. Nix, a free spirit by nature, was determined that Mary have the vacation of a lifetime, but by the time their visit to Greece was over, the ties between them had unraveled, and when they said goodbye, it was for the last time.
Three years later, Mary returns to Europe to try to understand what went wrong, in the process meeting the first of many men she will spend time with and travel with throughout the world. Through them she experiences not just a sexual awakening but a spiritual and emotional awakening that allows her to understand how the past and the future are connected, and to appreciate how important it is that she live her life to the fullest.