Patrick Ryan's Gemini Bites
Very cute book about a pair of boy-girl teenage twins who pretty much hate each other, and what happens when they both get interested in a classmate who comes to stay with them (who may or may not be a vampire). The chapters alternate between the twins' perspectives and both are snarky, likable characters. The end wraps up a bit neatly, but this is a YA book after all. A-/B+.