A Princess in Theory by Alyssa Cole, 373 pages
Naledi Smith is buried in work for her graduate degree in epidemiology when she gets a series of emails telling her that she's the long-lost princess of a small African nation and betrothed to the prince, if only she'd send some proof of identity to get the ball rolling. Smart woman that she is, Naledi ignores the increasingly pushy and suspicious emails. But as it turns out, they're true and Jamal, the ridiculously hot guy that's renting the apartment across from her, is actually Prince Thabiso, trying to get to know her without that whole royalty thing getting in the way (while this may seem stalker-y, this is a romance novel, so it's not).
I don't really read many romance novels, but this one is so smart and funny, and the characters so well-developed that I was happy to make an exception. And if there are more books in this series, I'll happily read those too. Alyssa Cole, consider me a fan!