Please!! A Good Romance Anime Or Manga With Some Darkness?

Hi I'm new to yahoo so... nice to meet y'all. anyway, I'm a junior in high school, i always liked stories with normal guy or girl and guy or girl with dark secrets (supernatural or otherwise). other finds out through some twist of fate or other tells them. something happens, they get through it. happy life (or not). please I'm dying' here need to feel the suspense, secrecy, heart break, the love. that's right people you guessed it I'm a total hopeless romantic. please help, title of anime/manga

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