PLOT 2: REINCARNATION
Muse A and Muse B were once lovers, long ago. Through circumstance, they were torn apart and Muse B died. Now, Muse A is forced to walk alone on the Earth for eternity, remembering their lover as they once were, until one day, hundreds of years later, they see Muse B.
Muse B is different because of the times and has no recollection of it, because they are not the original, but a reincarnation of that person. They could look a little different, act a little different, but everything else is the same. Muse A knows that Muse B is their lover and will do anything to stay with them.
This is my idea with the help of fellow roleplayer faithfulhound based off The Mummy. You may use but please DO NOT take credit as your own.