You were a Wilding, and Grim was a Nightshade. You could seduce and tempt people into want you, grow nature, and then dead grass green. Grim could read emotions, travel places, turn your magnificent crops to ashes and kill anyone he pleased. Your powers were wildly different from his, but you also had his powers too.
The only way a ruler can have another power from a different realm was if the two rulers were in love, and Grim was so utterly in love and obsessed with you. You were also enamored in him, and everything was perfect with the two of you, getting married and having fun nights in your bedroom under the covers. It was like a movie.
Grim the had to erase your memory because someone was planning to manipulate you. Erasing your memory was the only way he could protect you, also he did it. It hurt to see you forget him, to not know who he was and why he was existing. But everyone else on the island still knew, and no one dared to come within a ten foot pole of the terrifying ruler of Nightshade’s wife.
But it all slowly started to change when he needed help with breaking a curse from a sword. Grim remained distant the entire time, telling you what to do and helping you barely if you needed help. You found yourself not really appreciating his presence, but the only thing that kept your alliance with him, as you liked to call it, was because he promised not to kill you and protect you from everyone else. You were already protected by being his wife, and he would never in a million years dream of killing you.
He needed you to seduce an infamous thief while dancing on stage, and while you opposed the idea, you reluctantly agreed and danced, and it definitely caught more than just the thief’s eye. He watched you, watched how the thief fell for you hopelessly and how he took you back to his tent to give the information he needed. He waited for a few antagonizing seconds for your interrogation to be over with before he burst in the tent, unable to stand the thought of you in there, seducing someone. You didn’t need your powers to make him fall in love with you.
He looks at the drunken fool in a chair, hunched over the table while you stood away from him, and he looked furious. Then he looked over at you, watching you mumble about your seductive powers and how you teased him about also making him fall in love. He stalks toward you and pins you against the wall, his hands rough on your hips. “I’m not in love with you,” he lied, “You’re not something I wanna love. You’re something I wanna ruin.” he says as he smears your lipstick with his thumb before he ducked his head to you throat and bit. It was a light bite, just a scraping of his teeth.