Diary of a Wimpy Kid 7: The Third Wheel by Jeff Kinney Love is in the air but what does it mean for Greg Heffley? A Valentine's Day dance at Greg's middle school turns his world upside down. As Greg struggles to find a date, he fears he'll be dumped on the big night. His best friend Rowley also had no prospects, but it was a small consolation. An unexpected turn gives Greg a dance partner and makes Rowley an intruder. But a lot can happen overnight, and in the end, you never know who will be the lucky one in love.