Severus gulped as he lied down on the bed again. He was turned on beyond belief. He still felt lily's wetness on his hand. Lily moved from her position on his lap to in between his legs and he stared at her with lidded eyes.

She placed kisses down the trail of hair that disappeared under his swim trunk. Slipping her fingers under the waistband, she gently tugged the swim shorts down his legs and threw them on the floor. She stared at Severus' full length resting against his stomach. She tentatively reached out a hand to stroke it. As soon as her hand made contact, Severus' hips buck and a groan escaped his lips. She grasped it tightly in her hand and pumped.

"Oh, gods." Severus grunted as Lily moved her hand faster. Lily bit her lip, deciding what she should do next.

She slowed her hand and bent down until her mouth was right above his prick. Her hot breath hit him and he pumped his hips into her hand. Lily's eyes flickered to his and back down. She hesitantly licked the head, earning a moan. She smiled and ran her tongue up the underside of his prick before pushing him inside her mouth.

Severus squeezed his eyes shut to avoid coming right then and there. He froze to make sure his hips didn't buck and hurt her. Gods, it feels so good.

Lily's mouth disappeared and Severus looked at her. She was biting her lip and looked unsure. Panic ran through Severus' head.

Oh, no. We should have done this. Merlin, I should have stopped it!

"Um, Severus?" Lily said in a husky voice. She brought her hand up to play with a strand of her drying hair.

"Y-yeah?" he answered, terrified of what she was about to say.

"Can we…you know…" her voice trailed off. Her cheeks reddened and she couldn't look at Severus.

"Do you want to stop?" he whispered, unsure that if he spoke normally, his voice wouldn't shake. Lily's eyes widened.

"No! No, no, I don't. I want to…keep going…" She looked in Severus' eyes. "I want you to fuck me."

Severus' heart leaped into his throat.

"Are…are you sure?" His voice did crack, but he could care less. Lily nodded and moved to lie next to Severus. Severus took a deep breath and got up to position himself between her legs.

"I-if I hurt you, just…just tell me, okay?" His voice shook and with his nerves and hormones, he wasn't surprised.

"I trust you, Severus." Lily said reassuringly. He propped himself up on an elbow and used one hand to maneuver his prick to Lily's opening. He paused and looked at Lily. Her eyebrows were furrowed and her bottom lip was between her teeth. He leant up and kissed Lily and slowly moved his hips forward. Lily gasped and whimpered. Severus stilled and pulled back to look at her.

Her face was in a grimace of pain. Severus didn't dare move. She took a deep breath and opened her eyes. Tears almost spilling over, she bit her lip. Severus was paralyzed.

"Okay, just slowly. Gentle." Lily whispered, staring into Severus' eyes. He nodded and slowly pulled out before pushing back in. Lily's lips parted as she inhaled and her eyes rolled back a little. He repeated the motion and a small moan came from her.

Severus grunted as he finally let himself feel her. Her muscles tightened around him each time he pumped in, making the sensation perfect. She was hot and slick and he wanted this moment to last forever.

"Faster." She whispered. Severus pumped his hips faster and buried his face in her neck, kissing her gently. Lily wrapped her legs around him and dug her nails into his back. He groaned loudly and brought his head up to kiss Lily's cheeks, chin, nose, lips. Hot breath blew into his mouth as a tongue rushed out to meet his. Severus thrusted faster and Lily moaned louder.

The bed protested under them. Lily moved her hips to meet Severus', making his go deeper inside her. Lily tipped her head back exposing the flesh of her neck. Severus moved down and nibbled. Lily gasped and her body tightened.

"Severus!" she screamed as her body found release again. Severus found himself ready to climax and he quickly pulled out before biting Lily's neck and coming. He collapsed on top of her.

After a moment, they found their breath and Severus rolled off her to lie on his back. Lily curled into his side and put a hand on his chest.

"You bit my neck pretty hard." Lily mumbled. Her body was sore, some places sorer than others.

"You scratched me multiple times." Severus whispered. Lily laughed and scooted closer to him. Severus brought a hand up to lightly trace patterns on her arm. He kissed her on the top of her head.

Lily smiled and closed her eyes. She took a deep breath, inhaling the scent of Severus' body and a strange, new scent she now knew as sex. Soft snores rumbled in Severus' chest. She was comforted by the sound and drifted off to sleep.