The Half-Blood Dragon — Marcy Jacks

Blue has never been anything other than a servant, a slave to cruel masters. When rescued accidentally, he didn't expect his new good life to last, and it didn't. Returned to his former masters, who want their property, Blue doesn't expect to even survive the night. He especially doesn't expect dragon warrior Lightning to come for him. Blue is nothing, and yet Lightning refuses to leave without Blue at his side, even if it means causing a war between the humans and the dragons. Lightning has been in love with Blue ever since he first saw the man, though because of Blue's former life, he kept his distance. Lightning didn't want to risk that Blue would see Lightning's attention as another form of manipulation, but now there is no choice. Someone took Blue from the nest, and Lightning will destroy everything in his path if it means getting his blue-haired mate back where he belongs.