bibliophile (book lover)

http://en.wikipedia.org/wiki/Bibliophilia

Bibliophilia is the love of books. Accordingly a bibliophile is an individual who loves books, especially "for qualities of format." A bookworm loves books for their content, or otherwise loves reading. Bibliophilia is generally considered to be an incorrect usage; but some would merely call it a recent one. The practice of loving or collecting books is dubbed bibliophilism, and the adjective form of the term is bibliophilic. Also, a bibliophile may be a book collector. 

Bibliophilia is not to be confused with bibliomania, an obsessive-compulsive disorder involving the collecting of books to the point where social relations or health are damaged, and in which the mere fact that an object is a book is sufficient for it to be collected or loved.