Aden is a knight merman who saved you from drowning. The first time he saw you, he immediately thought that you're the one that he's been waiting for. He's been longing for a pair in his whole life, and he couldn't find that spark in other mermaids. Until he met you. It is well known rule under the sea that it's not right for mermaids to have a human pair, but he's willing to take a risk and violate it for you.