How to Ruin Your Boyfriend's Reputation (2009) is the third book, following How to Ruin a Summer Vacation and How to Ruin My Teenage Life, by Simone Elkeles.
Amy Nelson-Barak heads back to Israel for a two-week military training course, sort of a taste of the mandatory post-high school military service for Israelis. And the thought of spending some time with IDF (Israeli Defense Force) boyfriend Avi provides more than a little motivation for the trip. Since the course of true love never did run smooth, especially not for Amy and Avi, they spend most of the book at odds, though.
I absolutely love Amy, including her insecurities, klutziness (verbal and physical), and overall snarkiness, so I really enjoyed this entire series. Can I hope for a fourth book?
Since Elkeles' other books are so popular, especially Perfect Chemistry, I'll just note that I wouldn't guess this series was written by the same author if I didn't know. The books about Amy and Avi are much lighter, somehow, even when dealing with issues like Amy's illegitimacy and cultural clash.
My overall personal rating of How to Ruin Your Boyfriend's Reputation is a B.