I listened to this on a long car trip and it generally kept me entertained. Pearson seems to really capture what it's like to be a teen girl, particularly a teen girl in love with a pop star, in this case that pop star being David Cassidy. Being a decade younger, I was too young to be in love with "David" myself, so the book probably would resonate perfectly with women in their 50s. I found myself at times feeling the whole story was a bit tiresome, but at others, I was a little enchanted with how well she did describe being 13 or 14 and dealing with the usual issues of that age.
I expected the book to be mostly about the main character as a 38-year-old woman, as the blurbs seem to cover it, but a solid half of it was about her as a teen. So the beginning doesn't just "set up" the second part of the book: it is a huge part of the book, so the second half seems almost a bit anticlimactic rather than being the major part of the story.

Read my full review, including a rating for content, at RatedReads.com: https://ratedreads.com/think-i-love-you-fiction-book-review/