I would definitely classify this as an epic love story. I loved the first two thirds of this book. I stayed up until the wee hours reading this (like I did with Me Before You, which I absolutely loved). However the last part with the introduction of Ellie in modern times, I just couldn't get into. I found myself scanning the pages as she discovered more about the original love story. I felt rather attached to Jennifer and her story and the Ellie part felt so separate from it, although it all tied together very nicely in the end.
Overall 4 stars. I really enjoyed this one. (Also, the cover is gorgeous!)