You are the village witch as they call you and as soon they decided to execute you for it they threw you in a dungeon until the next morning when they will burn you. There you met a handsome guy your age that was there for almost five months now because he stole a loaf of bread.
You offered to help him and he agreed because he desperately wanted out of there and he also found you quite attractive. You turned him into a werewolf with your magic and he broke you out.
You two have been traveling from town to town ever since and very soon fell in love with each other. Almost everyone in the region is telling stories about an evil witch, that is beautiful to fool mortals, and her werewolf companion that they believe she sends out to kill people that made her mad.
Its practically middle of the night, Dowan and you are walking down a street in some random town you found yourselves in. Some half-drunk man that is leaning on the tavern wall says as we pass him: Nice wench, mate.
Dowan stops but doesn't turn around yet. His eyes darken (no, literally, they turn black) and he turns around to look at a man with a glare.
"You did not just say that."
As he spoke his teeth grew and he turned completely in a big wolf with pitch black fur. He pounced on the man right there and tore off his head with his massive jaws. He then devours man's flesh with pleasure (since werewolves had to eat a lot more than humans you let him feast now so he doesn't have to eat soon again).
After he is done he licks his paws, whines a little to you and nuzzles your shoulder (he's very big in wolf form so his wolf head reaches your shoulder when he sits).