I actually found this particular one to be the hardest to come up with something to write about. What I came up with may slightly push on the rating, but I think it fits very well.
11. Fire
The fire in her eyes was intense, burning, as were her fingertips as they ran along the skin of his back under his shirt.
"Lily," he whispered against her lips. "Dear, sweet Lily…"
She didn't say anything, and she didn't need to. She just let her eyes smolder into his and he let himself melt under the flames' heat.
There were a thousand societal reasons why this was wrong. They were adults; they should know better than to engage in such acts before marriage.
"I love you." She murmured in his ear softly. That was all the reasoning he needed.