Bookshelf
4 free books on the Love bookshelf, free to read online. Chapter 1 of any book is free, no account needed.
The Evolution of Love
Emil Lucka
Falling in Love; With Other Essays on More Exact Branches of Science
Grant Allen
Hints for Lovers
Arnold Haultain
Herein is Love A Study of the Biblical Doctrine of Love in Its Bearing on Personality, Parenthood, Teaching, and All Other Human Relationships.
Reuel L. Howe