The New Republic has published a review of Ethan Leib's new Oxford University Press book, Friend v. Friend. Here's an excerpt from the review:
"Leib's book ... [is] successful as a reflection on the complex relationship between law and friendship, and it will offer rewards to people interested in the sociology of friendship. A particularly fine chapter discusses the relationship between friendship and contract law, and the surprising degree of overlap between the two."
The entire review is available here: http://www.tnr.com/book/review/friendship-and-the-law-response