His kiss is strong, impatient. Her embraces tight, passionate. They have this one night. This one moment. It's theirs. Draco is out of town with Narcissa for the weekend, visiting Narcissa's sister and grand-nephew. There's nothing to stop them. No one. They barely make it up the stairs of Malfoy Manor. Months of unspoken attraction and stolen glances; months of careful planning has led to this one moment where all bets are off. And Lucius and Astoria are determined to make the night last.
It's like they're exploring each other. Slowly, relishing every second and each new discovery. They both know that they cannot have a future together, but that doesn't matter. In this one night, they are together. They both know it's a terrible thing to do to the ones they're supposed to love. But when you're with the one you really do love, even the most wicked of betrayals is beautiful.
Disclaimer: All recognizable characters belong to JK Rowling. "As Long As You're Mine" is from the musical "Wicked".