Awwww. To propose to his girlfriend, Paul Phillips wrote a book about their relationship, had it illustrated by Nashville artist Yoni Limor, printed it. Then he planted the book in the library and arranged to have her stumble across the book and read it to him. Then he proposed. :-) More info on Reddit, where Paul originally posted the news. Also worth reading: the illustrator's blog post about the event as well as the story on Buzzfeed (latter has more pics as well as the whole picture book text & art).
You can read the whole picture book on Imgur.com, where PPaul9 has posted his book. Both Paul and his girlfriend like going to the zoo, so Paul wrote himself as a gorilla and his girlfriend Erika as a giraffe.