He always intended to marry her.
Well, 'always' after he accepted that he did love and want to shag her.
When they started having sex, all the time, it became an imperative. He was terrified she'd end up pregnant out of wedlock. It was bad enough seeing James or Lily within twenty-four hours of a tryst, worse because he was almost sure they knew though he couldn't reason how. He knew Harry knew, because Ginny knew and they were finally dating, but Harry wasn't running to his parents to talk about his sister's love life.
Proposing was quietly done when they were alone, after he asked Prongs for permission because it seemed necessary, which was uncomfortable from dreading it, to doing it, to being done with it.
James Potter was, without a doubt, his best friend. His best friend who was about to be his...in-law.
They both tried not to think about it.
The society papers were all in an uproar again. Kissing her at graduation was one blow up, but a ring? Holly couldn't keep working and it made her furious, but that freed up more time for handcuffs and muggle gels that warmed or cooled and other insane experiments; within a week she didn't mind it any more.
She was adventurous. Had him take her out so they could have a go, "With a risk."
Out of her bloody mind and she drove him crazy with all the things she wanted to do. Like slide up and down his back, naked. Rubbing off on him. Moaning his name as she went.
Getting in his face, all rosy cheeks, licking his ear and sucking on his neck.
Breaking into his apartment (not really, she had a key) to kneel on his bed in a tiny school girl skirt and knee high socks, chest barely contained in a too tight cropped blouse.
She had the best bedroom eyes.
Holly'd known since she was a child that Sirius would give her anything she wanted. When she grew up and wanted him, he gave her that too, along with things she didn't know she wanted. Like an actual wedding.
First, she had it in her head that it couldn't happen. Her parents couldn't handle it, he was Sirius Black, and it was an unnecessary hassle.
Second, it was embarrassing. The idea of going out to get a dress, especially when everyone knew who she was and what was happening, made her want to dive into a hole.
All she wanted was to file paperwork.
To her horror Sirius chose this one thing to put his foot down on. He would have a wedding, even though she didn't want it and there was nobody on her side. Not Harry, not Ginny, not Remus. Not even her mother.
"You'll regret it if you don't," was Lily's warning.
Holly didn't think so, but the one thing that stopped her from having a fit was Sirius. It was the only thing she could remember him asking of her. He never asked for anything! Except permission to take her clothes off, but that didn't count.
Even if she didn't want the publicity, the cake, the party or the dress, she did want to see Sirius happy.
And she did.
The awkwardness of having her father walk her down the aisle washed into nothing because Sirius Orion Black was glowing. Radiating pure joy with a smile big enough to split his face and it was contagious even as she cried and they vowed and he held her cheeks so he could kiss her in front of everyone.
But not Snape.
He didn't come and that was probably for the best.
The End
A/N: Hope you enjoyed!