A/N: I know. I'm horrible. I just had to start a new story...But I've been reading Sirius/OC stuff lately, and I love them, so I felt like I had to write one...

Full Summary: Sirius Black is notorious for having week-long relationships. When the Gryffindor girls make a bet with Daelia in sixth year, they tell her that has to get Sirius to be in a relationship longer than two months by the end of the seventh year. But the worst part? That relationship has to be with Daelia. And Daelia is notorious for screwing things up. She may be good at winning bets, but when her own heart is at stake? Losing isn't an option. Using isn't an option. New guys? They aren't an option for her anymore, either, because she's got a few too many people that need to be overprotective. Things just got a lot more interesting for the Marauders.

I suck at summaries. Sue me.

Prologue:

I knew that our last two years at Hogwarts were going to be epic, the best years, something we would never forget. They would be sad, heart-wrenching, terrifying, hilarious, exciting...Everything you could imagine. I knew all of that before we even started sixth year. But I had no idea just how epic they would be.

I never meant to make that bet.

I never meant to fall in love with Sirius Black.

And I never meant to let it all go to Hell, either.

But I've always been notorious for screwing things up. This was just another one of those things, though I hadn't expected it to get this far.

But it did. And now...Now I'm all alone because of some little mistake that neither of us could ever get over.

Going into it, I should have known that something like this would happen. I should have known that I'd screw up, get too involved, even though it was just a bet.

But bets never turn out the way we want them to, do they?