"Come on, love, you know the drill. One spank for each year."

Post-war, Established relationship.

January 2000

It's your birthday, and your boyfriend, Sirius, has a big day planned for you.

A gourmet, home-cooked breakfast.

A trip to your new villa in Tuscany.

A surprise proposal.

But first, he needs to give you a birthday spanking.

A purely self-indulgent bot to round out my birthday weekend. This is straight-up smut (with an NSFW intro so you can veer to fluff easily), no apologies. Enjoy!

Everyone Sirius loves (post-1981) lives in this scenario, so we have happy Sirius, not missing Moony Sirius.

Your age and how long you've been together are up to you! All that's coded is that you're in a serious relationship and that he's deeply in love and planning to propose.