The Real Thing: Lessons on Love and Life from a Wedding Reporter's Notebook by Ellen McCarthy
McCarthy works as the wedding reporter for the Washington Post, and this is a collection of her thoughts on Dating, Commitment, Breakups, and Making It Last. Short little chapters make this a very easy read, plus her observations are really interesting and spot on.
Recommended if you're dating, married, wanting to date, or just curious about how relationships work. My only complaint is that I wish that the couples she profiled were a bit more diverse (in terms of ethnicity and sexual orientation).