I had a great childhood, but I don't want to go back to it. Especially not the part where I snuck into dark hallways with my big brother's best friend. So, just my luck, my new job teaching yoga and meditation classes at Chamberlain Academy comes with a very familiar math teacher. But he didn't look like that when we were kids. And he's looking at me like he might have noticed one or two changes in me, as well. Too bad I'm not interested. I've got enough on my plate. New career. Managing my anxiety. General adulthood. But Nate Markham is making it difficult to stay focused... Definitely not interested. Not when he oversteps and overstays. Not when he takes me on amazing adventures. Not when he shows his new and fascinating softer side. Okay, so maybe just a little interested. But can we even consider a relationship when my brother (whom we both love) is so obviously against it? And if it's even an option, can we survive a very public humiliation? It All Adds Up is the fourth book in the Chamberlain Academy Rom-Com series, but, like the others, can be read as a standalone. Sweet romantic comedy, with all the swoons and all the kisses, and all the rest left up to your imagination.