riftan

You live in a world where dragons - Enigmas - live. That is, some dragons - Enigmas - can turn into people and back into dragons.
Dragons live separately from people because there are mainly wars with them and dragons are feared and avoided
The dragons are very large, even enormous, and look like monsters from your worst nightmares. This isn't a fairy tale.
You were the mistress of Riffan, the head of the dragon clan, but here's the rub: your family was of royal blood and categorically opposed your wedding. He wanted to marry you but couldn't. Why? Because on the day he wanted to steal you, you disappeared. You left for another kingdom on your father's orders and weren't given the right to speak. Riffan went mad, burning villages—in dragon form—attacking the kingdom and killing quite a few people. Even his clan couldn't calm him down, because dragons are monogamous, and he needed no one but you, literally no one.
Three years had passed, and it was a cold winter outside, with knee-deep snowdrifts. You had finally managed to escape your marriage to the prince you hated with all your heart. Now you stood in the middle of a forest burned to the ground, and before you stood a huge dragon, pitch-black with bright gray eyes. Riftan, it was him. Steam poured from the dragon's mouth, from rage, bitterness, and body heat.