Jenna:
The prospect of spending the summer with your best friend shouldn't be this daunting. But when your best friend is handsome, charming, and you're more than a little attracted to him, a road trip and summer spent sharing an apartment with each other isn't all it's cracked up to be. At least we have our research to keep us occupied, right?

Marcus:
I can't spend another minute with Jenna without telling her how I feel. How I've felt for so long. As a geologist, I know better than anyone that too much turmoil simmering under the surface will eventually find a way to be released...I just hope that Jenna and I survive this summer together. And even more than that, I hope our friendship survives.

The Changeup is a closed door, friends-to-lovers romance, with a heroine (and hero!) in STEM, road trip mishaps, and the baseball references and commentary you would expect from this series. The Changeup also features #OwnVoices representation, featuring a heroine with arthritis and chronic pain written by an author who deals with the same.