Author's Note and Another Stuff

When in their third year, Hermione Granger got a love note from an anonymous.
She wanted to figure who sent it, but since Voldemort was still in action, she put it to the back of her mind.
When she's in her seventh, (or eighth, nobody knows.) she received a mail, and inside that mail, there's a love letter with the same handwriting as the love note she got in third year.
She determined to find out, and that "anonymous" is, well, the least person she expected.
As they both fall in love with each other, their love tested in each step they take.