Irresistible Attraction--Secret Maneuvers, Book 2 by Amanda Adams

Josh Lanyon knew he'd made the biggest mistake of his life.

He'd slept with his best friend's sister and walked away. Problem was, while his head insisted he was doing the right thing, his body had other ideas. Since he'd returned to his SEAL unit, every touch haunted him. He could not forget her eyes, her smile, the way she'd surrendered in his arms. And now that he's come home, he is determined to make her his forever. Trouble is, she's not interested.

Sara Martin has had enough. Her teenage crush turned into a hardcore obsession when it came to the hot, muscled, and oh-so-sexy Josh Lanyon. They'd both fallen victim to the chemistry that sparked between them, and then he'd left her alone. He didn't call. He didn't answer her letters. He just...vanished.

Now he wants a second change. Now he wants to explain. Now he wants her to allow him back into her bed, and worse, into her heart.

He's dangerous. He's lied to her before. But...