The cursed king is a shameless husband.
Meet Loriel Ashborn, former king of Summeria, 15-century old immortal, a doting husband, certified simp, a wife's slave.
In the land where the human race lived side by side with other races like the elves, witches, and those immortal beings often calling themselves gods, lived a powerful king, Loriel Ashborn.
One fatal mistake caused him to lose the woman he loved as she was sent to the future by the evil Time Master before he died. The only way to see her again is for him to take the curse of immortality, and so he did.
Now, after 15 centuries, Loriel finally found her again. But she didn't remember him?
Well, who cares! This time, the shameless husband would never let her go ever again.
To make her remember their life together, he even faked a terminal illness with his 'dying wish' was to experience how it was like to be married.
And when he *cough cough* 'miraculously' made a full recovery, he said, "Wifey, you saved my life! Now, I owe you forever. I will repay with my body."