Forgotten | Meliodas X Sin!Reader

{complete} (Y/n), the Griffin Sin of Solitude.
Long, long, ago, she had begun a relationship with Meliodas. But something happened. A gigantic group of bandits attacked and "killed" (Y/n), only to leave Meliodas broken. Merlin cast a spell to make Meliodas forget about (Y/n) but then she comes back from "the dead". Will he remember her? Or continue his relationship with Elizabeth?