If you’re looking for Valentine’s Day inspiration, you could try:
“Everything I ever needed to know about Economics I learned from online dating” – Paul Oyer (Buy in UK; Buy in US) – A guide to economic ideas pegged on the author’s experience trying to get a date online. It’s fun without being revelatory.
“Marriage: A History” – Stephanie Coontz. (Buy in UK; Buy in US) – A weighty but fascinating history.
“Dear Undercover Economist” – My favourite letters from the “Dear Economist” column (Buy in UK; Buy in US). Obviously this book is absolutely marvelous in every way.