hufflayla
"The Gryffindor common room was all warm light and bad card tricks when the owl tapped the window-sleek, official, black ribbon on heavy cream. I cracked the seal and the world narrowed to tidy clauses and one ridiculous truth: betrothed, to Draco Malfoy"
"Later, in the library, he read it with that steady Malfoy glide, said "Well. That's... tidy," and gripped the table so hard his knuckles went white. "You're freaking out," I whispered. "Don't be absurd," he lied."
ORRRRRR....
Harry gets a letter from The Ministry of Magic, finds out he's betrothed to Draco Malfoy. They have to keep it from their friends make it seem like like are just dating, and next September their 'engagement' goes public.