[Disclaimers: All characters are of age. Also, I don't own these characters.]

The ripples of Aang's muscles were glistening with sweat as he hovered over his fiancée. He was hitting exactly where she wanted him to and their breathing was becoming more and more ragged with every thrust. Their hearts beat rapidly. Katara groaned when he hit a particularly sweet angle. She glided her hands from the back of his neck over his shoulders, down his pecks, his abs, and then snaked her arms around his back to dig her fingers in around his shoulder blades. He buried his face in her neck and whispered to her between kisses. Katara quivered at the feeling of his warm breath on her slick skin. "Katara…oh, Katara…Katara…

Katara

Earth to Katara, hello?"

Suddenly she was reminded of where she was: standing in the water off the shore of the beach. Her friends were walking back towards the sand.

"Sorry, I was, uh, lost in thought for a second there." One glance at her shirtless boyfriend and her cheeks were turning pink in remembrance of the scene she'd been designing in her mind.

The Avatar noticed and cocked an eyebrow slightly at her. "Everyone's packing up to go back and clean up before dinner. Ready to go?"

Katara watched her brother struggle to fold up a chair they'd borrowed from the beach house. "Umm…actually, I'd kinda like to stay a little longer…" She glanced in the direction of a giant rock they'd been around before. It had a side almost completely obscured from the shore, allowing for more privacy than they were likely to get traveling with everyone in tow. Her sultry sparkling blue eyes met his, hoping he picked up on her signal. "Care to join me?" Aang's jaw dropped slowly as he put the pieces together.

"Hey, guys!" Sokka called. "You coming?!"

Aang flicked his eyes between Sokka and Katara. "You guys go ahead! We'll catch up later! Katara was gonna show me a new waterbending move she's been working on!"

"Okay, well, don't take too long! I will not hesitate to eat without you!"

The two stood in place for a moment longer, feigning waterbending training until the rest of the group was up the hill so they could make a break for it. Aang bolted off, grabbing Katara by the hand and pulling her away with him to the back of the rock she'd alluded to earlier.

Katara smiled at him and gracefully backed into the stone, never taking her eyes off his. Her hand rose to motion him towards her. Slowly, he approached and settled his hands on her hips as she wrapped her arms around his neck. Their lips met for a few kisses before she decided to voice her request.

"Aang…"

He pulled back to look at her "Hm?"

"I want you to touch me."

Aang chuckled. "I am touching you." He rubbed his palms in circles on her hips.

"Aang…" Katara glanced down to her pelvis and then back up at him. He started to realize. "I want you..to touch me."

"Oh." He stared blankly for a second while he processed what she was suggesting. "Really?"

A smile grew on her face and she nodded. "Please."

He smiled back at her before leaning in to begin kissing her neck as his right hand slid up to caress the underside of her breast. "Let me know if you wanna stop or if you want to do something different or something, okay?"

"Will do." She sighed when he nibbled on her skin.

Making out they were used to. Breast groping, some grinding, light nipple play. But this, using their hands to get each other off, they were not used to. It's not that it didn't appeal to them or they hadn't talked about it, of course, just that they hadn't gotten there yet. They were taking things kinda slow, which was fine with them, but since they'd gotten engaged they were looking to start "expanding their horizons" so to speak, and today, Katara was feeling extra lustful.

Aang kissed his way across her jaw and down the other side of her neck as his hands admired the curves of her waist and hips. He kissed across her collarbone, and both hands came up to massage her breasts. Katara moaned as his palms slid over her hardening nipples. He trailed his kisses back up her throat to meet her lips again, licking her lips and asking for permission to enter. She granted it, mirroring his tongue with her own. Her fingers linked together on the back of his neck, tugging him in closer with their hips pressed together. He pulled back to lift her swimming top over her breasts and quickly came down to suck on her right tit.

"Ahh! Aang!" He played with her other nipple between his fingers as he sucked and flicked the tip with his tongue. Aang's free hand began teasing the waistband of her bottoms with his knuckles grazing along her silky skin. The top of her curly dark pubic hair tickled the tips of his fingers.

He pulled back again to lock eyes with her as his right hand dove under her bottoms and past the curls. Katara whimpered as his fingers rubbed up and down between her slick labia. She'd been working herself up for a while already, so she was soaking wet at this point, and he was fascinated. He didn't realize how slippery it would feel, but now he had more material for his fantasies. Both of them stood there, relishing the feeling, dreaming about the days in their future when he'd bury his cock inside her pussy.

Katara's breath hitched when he finally reached her clit. She instructed him on where to move his fingers so he'd hit just the right spot and then demanded him not to leave there. She whined as he moved at an agonizingly slow pace.

"A little faster..and suck…my nipple…please…."

He complied and began sucking her left nipple this time while he picked up the pace with his fingers. She ground her hips in rhythm with his hand, moaning as she reached closer and closer to her climax. One hand clawed into his shoulder and the other was on the back of his head, bolting him down to her chest.

"Ohhh, fa..faster…ahhh, ahh, ahhhhhh…"

Aang increased his speed for the second time, and it only took a few more motions before her back arched and her hips started moving on their own to complete her orgasm. She had to slap her hand over her mouth so her scream didn't project too far and risk them being heard by a passerby or a friend of theirs who might've decided to come back outside.

He began removing his hand, but Katara grabbed his wrist to stop him. She ground into him a couple more times to finish the after waves of her release before she let go. Aang looked at his hand and admired the shine she left on his fingers before rinsing it off in the water around their legs. Katara closed her eyes and laid her head back on the rock as she caught her breath.

"We should probably get back to the house before they start wondering what we're actually up to," Aang stated as he helped her fix her swim clothes.

"Do you, um, need to…do you want to deal with…that.." She glanced down at his groin and back up at him. She could feel his half-hard length brushing up against her.

A small blush ran across his face. "It'll go down by the time we get inside." A thought crossed his mind, and he smirked at her. "But, I might need some help with it later."

Katara made a seductive face back at him. "Later?"

Aang placed a sweet kiss on her forehead. "After dinner maybe, when everyone's gone to their rooms."

"It's a date."

The two returned to shore to grab the last of their belongings the others left behind before running back to the beach house, hoping dinner wasn't too far along yet. The rest of the evening they spent preparing themselves for their nighttime date, eager to continue with this next chapter of their intimate relationship.