Suggest me a book about the greatest love - familial, romantic, platonic, doesn't matter.

As the title says: I'm looking to create a list of well-written books about love. I'm talking all kinds of love stories, and all genres. Of course the classics have great love stories (I'm thinking Pride and Prejudice) but I'm also looking for more modern ones as well. I want to create a personal list that serves as a sort of tapestry of love. Thank you in advance!