The homepage of the National Marriage Project at Rutgers has links to new publications, a mission statement, a contact area, and information about other resources. It's a good place to start your online research about the current state of marriage in the U.S.
Interested in narrowing a topic for a research paper about family issues? This homepage from the National Clearinghouse on Families & Youth should give you plenty of good ideas.
Here are some excerpts from a book called The Psychology of Love. What do you make of the book from the info you found?
Here's an essay from Psychology Today that proposes a theory of love-as-a-story. Read it and answer the author's title question: "What's Your Love Story?"