Cloak & Silence. The League: Nemesis Rising, #6

One of the fiercest soldiers the Phrixians have ever produced, Maris Sulle has been an outsider from the moment he was born different from the rest of his family. He grew up with a secret that cost him everything--his birthright, his family, and his military career. In all his life, he's only had one love, and he has sacrificed his own happiness to see his best friend reunited with the woman he loves.
But now that his good deed is done, he feels lost and adrift. Even though they do their best to include him in their new family, Maris is once again on the outside looking in. Ture has spent his life hiding from everyone around him--his family, the world, you name it--while trying desperately to fit in. Badly hurt by everyone he's ever known, he trusts no one except his own best friend. And honestly, he can't understand why he trusts her.
Nor can he believe her when she describes a loyalty between friends the likes of which he's never seen. But when Ture is in his darkest hour, he's saved by a hero he thought only existed in novels. A man who is every bit as scarred and mistrusting as he is--one who has no interest in being dragged into another relationship with anyone. Having spent his life as a living study of doomed relationships, Maris is well aware of the courtship and fiasco that invariably follows.
Still, there is something about Ture he can't resist. Something that won't let him walk away when he knows he should. But when old enemies return to threaten them both, they either have to stand together or die alone.