Author's Note: I don't own The Vampire Diaries. If I did, Ian Somerhalder would be shirtless in every scene. Alas. Full-on Delena smut ahead!

There were four times Elena gladly took Damon where she had once been intimate with Stefan, and one time when she could not.

I. An unused classroom.

Last year, Alaric had fifth period free and left school to run an errand. When the rest of class filed out at the end of fourth period, Elena had lingered behind. "Stef, come here," she said, leaning against the edge of Alaric's desk.

He slung his backpack over one shoulder. "What?"

She looped two fingers through his belt loops and pulled him in close for a kiss. "Skip fifth period with me. Let's stay here."

He instantly swiveled towards the door to check for people passing by. When he turned back to Elena, he wore half a grin, as if he couldn't decide if she was crazy. "You've got to be kidding me."

She stroked his erection, which was quickly hardening against his will, but he shook his head. "C'mon, Elena. People could walk in at any moment."

That's exactly what made the prospect so thrilling to Elena, but she had shelved the idea, embarrassed.

"I'll make it up to you later, I promise."

This time around, Damon beat Elena to considering the idea. An unmarked package appeared at her doorstep on her way to school one morning. She brought it inside and opened the box. Inside sheer sheets of black tissue paper, she found a pleated plaid schoolgirl's skirt and a pair of black thigh-high socks. There was an unsigned note: "Be a good girl and wear these today, or else the teacher might have to give you a spanking."

She turned scarlet at the familiar, old-fashioned script - more hurried than Stefan's, but still close to flawless. She quickly swapped her jeans for the skirt and socks and went to school.

"New outfit?" Caroline asked in homeroom.

"Yeah, it's a gift."

"From...?" Caroline probed.

Elena dropped her voice to a whisper. "Damon."

Caroline whistled. "Kinky! I approve."

But English, math, and Spanish passed uneventfully, without Damon in sight. He wasn't responding to texts, either. On her way to Chemistry, she jumped as a hand grabbed her waist from behind.

"Fancy running into you here," Damon greeted her. "The teacher needs to have a chat with you about your grades."

"Damon!"

He pulled her into an empty classroom and locked the door. "It appears as if class isn't in session today."

She twirled and the skirt flared around her thighs. "What do you think?"

"I think you need to be fucked." He pressed against her for a kiss. His mouth moved expertly over hers, but she kept up easily. He picked her up and perched her on the desk. Her legs wrapped around his hips, but he shimmed out of her grip onto his knees. "These can go," he said, ripping off her black cotton panties.

Elena wished she had worn sexier ones today, but couldn't have cared less once his tongue danced across her inner thighs. She leaned her elbows back on the desk; Damon hooked his arms under her thighs and pushed his face further beneath the pleats of her skirt. He teased her, running his tongue along the creases between her thighs and her wet center. She squirmed, arching her back in pleasure to drive herself closer to his tongue.

When he made contact, she let out a low moan before clamping her mouth shut, suddenly aware of the adjacent classroom on the other side of the wall. Damon circled and lapped at her clit with firm, steady strokes. Her thighs quaked and her hips shook uncontrollably. She came undone with her head thrown back in a silent scream.

Damon gave her no time to recover. He grabbed for his belt buckle and zipper, freed his erection, and pushed her skirt above her waist. With one hand clutching her right shoulder and his other hand strong at her left hip, he plunged into her. Her skin was slick; contact was easy. The desk was exactly the right height. Elena anchored her arms behind Damon's neck and pulled him closer with her heels. She was still high from her release, unable to focus on anything other than the pounding fullness at her core. She kissed her way down Damon's neck and sank her teeth into the soft spot above his collarbone. Her nerves instantly heightened. She felt every molecule of Damon's humming against hers and it was enough to send her over the edge a second time. As Elena's muscles tightened around his cock, Damon rode out his own orgasm. His thighs slammed into the desk and it skidded across the linoleum.

"I believe," he said, still hazy, "that you deserve an A. Excellent work, Elena."

They wiped off their sweat, dressed, and snuck out of the classroom together.