The Charmer in Chaps by Julia London

Luca can always count on his sister to keep him grounded, “I mean, she doesn’t like me,” he said, and gestured to himself. Hallie laughed. Actually, she howled. “Okay, it’s not that funny,” Luca said, and when Hallie didn’t stop laughing, he demanded, “What is the matter with you?” Luca sometimes has to clarify himself, “Ella, it’s nine thirty. I meant are you up, am I bothering you,” he said, and took her hand in his. “And as much as I would love it, I didn’t come here to get you into bed.” I liked this book, I fell in love witb Luca.