My favorite thing about this book is its humor. 
 There are lots of funny moments, and the main characters are very witty and sarcastic. My least favorite part is the way that it drags on. I lost my patience with the characters a little bit, and I also felt like they didn't deserve to be happy when they constantly stood in their own way. Also, the fact that the book consists entirely of letters and notes, etc. made me feel left out of important moments at times, since you only get a brief recounting. 
 Although frustrating at times, the humor in "Love, Rosie" makes it worth the read.