Not sure if this is a true five star, but I have been enormously disappointed with my reads recently and ohhhhhh my gosh, this book was so satisfying so FIVE STARS FOR YOU, GLEN COCO I mean Emma Mills. I didn't entirely mesh with the mc's tone and voice in First & Then, but I really loved Slone in This Adventure Ends. She was so snarky, but not mean. Just dry and wry and ridiculous. I appreciated that a lot. I could have used a little more character development early on and some more doing. Halfway through the book I felt like I didn't have a good grasp on who everyone was, but it all evened out. I really like the relationship dynamics TAE (and Frank Sanger) presents (it's an inside joke. Please read the book, and then come back to my review to lol in a comment). There are friends, siblings, parents, crushes, exes, teenage romances, parent romances / marriage dynamics, step-parents, frenemies-ish, friendly acquaintances, and more. Although TAE doesn't get into all of it deeply because it is, after all, first person and centered on Sloane and her relationships, but I did get a good feel for the dynamics of the group overall. It made the story feel so much more alive, which I love. When everyone feels like they have real relationships other than their connection to the mc, they feel more real to me. Also, the book nicely balances the HEA that readers adore (which is discussed in great detail in several thoughtful conversations between Sloane and her dad) with realistic you-can't-always-get-what-you-want moments. Seriously, READ. THIS. BOOK. Even if you don't love it as much as I do, I think everyone will find something that speaks to them in its pages. Super good. Emma Mills is quickly becoming a star of the contemporary genre, and I adding her to my auto-read list if not my auto-buy. 
 Although Emma, can we please get some more kissing up in here? Kissing is AMAZING.