Riddle Me This?

Y/n Grimm has known the Riddle family since her first year of schooling at Hogwarts. Her friendship with Mattheo Riddle is put to the test when she discovers she has developed strong feelings for him. But along the way, she encounters his reclusive older brother, Tom. Whom everyone thinks they know, but the deep dark depths of his mind are yet to be touched. That is, until he decides to let someone in...