perpetuum mobile [Supernatural/Buffy the Vampire Slayer, Dean/Faith, R, 100 words]
You can't catch a shooting star, or capture fool's fire, and Dean will never pin Faith down for long.
Sometimes, though, she'll slow a moment. Long enough.
Never still though. Always restless, impatient. Battle-ready.
So he fucks her fast and hard, pants around her ankles, his hands under her top. He tried to kiss her once. "I don't do foreplay," she'd said, and blew him. He didn't complain.
Sometimes she'll stay a while, for breakfast even, if he pays, but usually she'll pull up her pants and smile, Dean still limp and hazy. "See ya round," she'll say, and leave.