Imagine your OTP- Person A is Immortal and Person B is mortal but Person B who was mortal made a wish to be mortal because {he/she} thought that they lived long enough and throught the years the mortal's lover witch was immortal had to watch {his/her} dear love age. And when Person B died Person A cried at Person B's grave.
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Lemme just... Yeppppp... That hit me in the feel s--