Best friends sister

The deal

A/n: hope you enjoy I had this idea but decided to change it up a bit. Btw one quotation mark means there thinking.
Disclaimer: I own nothing but the plot all rights go to J.K. Rowling.
Now on with the story.
One day before they go to Hogwarts with Blaise and Hermione in their back yard.
"Blaise you haven't told anyone our secret have you?" Hermione asked.
"No. No one knows that your my sister. Why have you told anyone?" Blaise asked concerned.
"No. How long do I have to pretend that I'm muggle born?" Hermione asked sighing.
"Until the war is over." Blaise informed her while she wasn't to pleased.
"You know that didn't help second year I still got petrified." Hermione exclaimed not trying to get to angry.
"I know I wasn't happy about that ether seeing as I had to sneak time to see you." Blaise informed her trying to calm her down.
                        ~ Flash back ~
"Hey Blaise where are you going?" Pansy asked.
"Oh hey Pansy I'm just going to the uh library." Blaise informed her as he walked away.
"Ok." Pansy said sitting down.
Blaise went to the hospital wing and sat beside Hermione.
"Come back please." Blaise said. "Please I miss you." He said tearing up. "I need to get going bye I love you come back soon." Tears started flooding from his eyes.

~ Back to present day~
"It just doesn't feel right keeping this secret." Hermione said calming down.
"Ok I'll make you a deal you can tell Harry, Ron, Ginny, and Luna." He said making her smile. "But I get to tell Draco, Pansy, Crabbe, and Goyle." Her smile stayed just straightened a little bit.
"Dea." She gets cut off.
"And we have to be nice to each other's friends." He informed her.
"Deal." 'This could be fun.' Hermione  thought.
Then an owl flies and drops a letter in Hermione's lap.
"Read it." Blaise said looking at her excitedly. "It looks like it's from Hogwarts."
Hermione opens the letter and reads
Dear Ms, Granger,
I am pleased to inform you that you are head girl this year. You will be sharing a common room with the head boy. More of this will be informed when your at Hogwarts.

             Sincerely,
    Professor Albus Dumbledore
A/n: hope you enjoyed please like and follow I will upload when I'm can next one is written already. This my first one ever.