A love between a werewolf and a vampire

A thousand years ago all humans forgot about monsters, everyone believed that they did not exist, that they were just fantasy, people's imagination, the whole thing, and nobody knows the truth.
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In a world full of darkness where the sun never shines, all kinds of monsters live, from WEREWOLVES to DEMONS, all grouped in packs and territories far from humans, for whom humans were the same monsters.
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Among the most powerful monsters are: witches, vampires and werewolves.
Vampires and werewolves have been rivals for billions of years and that is why they have territories very far from each other.
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Among them is Aiden the prince of vampires and James the prince of wolves, they "hate" each other and are "enemies" like their families and clans, they are forbidden to get close to each other EXTREMELY PROHIBITED.

Werewolves: They become animals when the full moon comes, they behave like animals, they look like humans but the difference is that they have tails and animal ears and sharp teeth, they growl, they eat human flesh, they are very territorial, always faithful to their pack, they love the moon and when they want they are people.

Vampires: They turn into bats, they are immortal but can be killed by: stakes, garlic, sunlight and clumps, they cannot enter a place without being invited first, they are fast and very agile, they can see from very far away and levitate, in addition to having instincts that never fail them, they can heal and kill at the same time, they drink blood to live and they love to be alone, they can turn into any animal, they can walk on walls and ceilings with ease and without using their hands
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James and Aiden have a secret relationship from everyone because they don't want anyone to know because if not, they would both have problems and a strange war. They meet in a secret and remote place to talk and be together. They both love each other but their love is strictly forbidden.