The Only Option by Megan Derr

A desperate dragon. A lonely necromancer. A marriage neither wants.

When he is summoned to the royal castle, Rochus anticipates nothing more than a particularly difficult assignment. The bothersome journey is almost made worthwhile when he is propositioned by a young, beautiful dragon, Tilo, who seems untroubled by the fact that Rochus is a necromancer.

When Rochus arrives at the castle he is ordered to marry the very same dragon he spent the night with. Though Rochus would rather sign papers and return home, he is helpless against Tilo’s pleas for help, even if it means spending more time around a man he is desperately drawn to but who doesn’t seem to want him.