Prompt: Please would you write a story about sending Deeks undercover to attract a woman and Kensi gets jealous?

A/N: I know this prompt is ancient. My apologies if anon is still around. Also, I've done variations of this, so please excuse any similarities. I figure this is early season 4 era.

"Come on, Deeks. How long does it take to change into a pair of swim trunks?" Kensi shouted, rattling the curtains on his changing room.

"Beauty like this takes time," Deeks called back, completely unconcerned by her annoyance.

She'd been caustic with him all morning, ever since they'd received their case for the day. Deeks was going undercover to gain the attention of a high-stakes burglar named Simone Burrell. She frequented Venice Beach where she had a habit of picking up surfers.

Hetty made it explicitly clear that Deeks should do anything necessary to gain access to Simone's home and find evidence of her crimes. Callen and Sam had immediately started making increasingly inappropriate jokes about how he might gain Simone's favor.

Kensi told herself that the idea didn't bother her. They'd both seduced people before and it was just part of the job. Her own feelings about Deeks didn't matter.

Yet the thought of another woman kissing him, touching him, made her want to punch something. Even though she had no claim to Deeks and certainly hadn't been sharing any intimate moments with him. Somehow that made it worse.

She paced a few feet away, resting her forehead against the archway between the bullpen and wardrobe area.

Poor Deeks had been the recipient of her anger and frustration. Of course he treated it like a joke, parrying her insults with ease and a wry grin. Damn him.

"Alright, are you ready for this?" Deeks asked, and she hastily straightened, smoothing her shirt down as the curtain slid open and he appeared, dressed in only a pair of board shorts. "Not too bad, Huh?"

Kensi swallowed heavily as he held his arms out, putting his body on open display. Her eyes roved over his chest, following the lines of his muscles to the top of the trunks, which were low and tight and left nothing to the imagination. She suddenly felt uncomfortably warm.

"Well," Deeks prompted. She hastily snapped her eyes upward, to see Deeks grinning at her with a twinkle in his eyes. "You approve."

"Aren't you supposed to wear a wetsuit?" she asked to divert attention from her burning cheeks.

"Yeah, but it's not like I'm going to put it on now. What about the shorts?" I think the color brings out my eyes."

Kensi agreed.

"Actually, I'm starting to feel a little nauseous," she lied instead. "Here, you better put this on before someone reports you to HR." She tossed the t-shirt he'd been wearing earlier at his head, which he caught in one hand, chuckling softly while he pulled it over her head.

Kensi turned her head under the pretense of checking her p

hone because she did not need that image running rampant through her head all day. When she turned back around, his chest was safely covered, and he was ruffling his tousled hair.

"So what's your game plan with Simone?"

"Just be my usual charming self." He moved a step closer, eyes serious despite his teasing tone. "Hey, you're ok with this, right?"

"Of course, why wouldn't I be?" she said immediately, laughing off his concern. She couldn't have Deeks feeling bad for her right now. "C'mon, everyone's waiting."

Kensi shifted on her towel, trying to appear casual as she searched the water for Deeks. She'd specifically chosen a spot a few yards away from Simone Burrell; close enough that she could provide backup, but not so she was on top of Simone. Sam and Callen were stationed farther up on the pier, ready to step if needed.

There were other surfers out there, but Deeks was clearly the best and new exactly how to draw attention to himself without seeming obvious. Simone was eating up. She hadn't taken her eyes off Deeks for more than a minute since he arrived.

Deeks caught a couple more waves before heading in. When he reached the shore, he buried his surfboard in the sand and started stripping off his wetsuit. He looked even better in the sun bringing out his tan and sun-bronzed hair. He stretched his arms over his head and Kensi had to look away for a moment as his shorts rode even lower.

She'd seen Deeks shirtless before and occasionally in even less, but for some reason she felt unusually flustered.

Get it together Kensi, she chastised herself. Even if Simone wasn't usually violent, who knew what she would resort to when cornered.

Laying his board flat, Deeks grabbed a tin of wax and crouched low, rubbing the substance it over the surface of his board in small, even circles. Simone watched him the entire time. When he was almost finished, she stood, tugging the deep V of her black bathing suit a little lower and arranging her red curls on her shoulders.

Deeks glanced up as her shadow suddenly blocked out the sun. He did a good job of looking surprised to see Simone there. He offered her a boyish, crooked grin, wiping his dripping bangs out of his eyes.

"Can I help you?" he drawled, eyes dipping down and Kensi easily imagined him checking out the V of her suit.

"I hope so," Simone answered coyly. "I'm Simone."

"Nice to meet you, Simone. Justin."

"You were impressive out there."

"Eh, not my best day." Deeks shrugged off her compliment, which made Simone laugh softly.

Kensi rolled her eyes.

"So humble. I like that." She tossed her hair again, moving closer in the process so Kensi had to strain to hear. "But you look pretty perfect to my eye."

"Oh, do you surf?" Deeks asked, injecting enough interest into his voice that Kensi would bet he earned yet another point in his favor.

"No, I'm more of an observer than a participant," Simone responded. "I can tell when a man is experienced based on the way he moves, his posture…" she reached out and trailed her thumb straight down Deeks sternum, nail sliding along his damp skin. "How comfortable he is in the water."

The gesture made Kensi tense in alarm before she could control her reaction. She quickly settled back, hoping no one had noticed her response.

Deeks made a hoarse sound as Simone kept going until she reached the waistband of his trunks, and rubbed her thumb along the skin there. It was almost indecent her out in the open where anyone could see.

"Wow, that's a lot bolder than I was expecting," Deeks said, grinning slightly as he shook his head. A mixture of anger and envy ran through her. He made no attempt to move Simone's hand.

It was for a case, Kensi reminded herself. He was doing his job exactly as Hetty had asked. But that still didn't quell the unfairness of it all. Some stranger got to touch Deeks so intimately and Kensi was restricted to playful punches and brief platonic touches.

"I don't believe in binding what I want," Simone said, shifting her hand back up to settle on his chest. "I have a place about a mile from here. Maybe you can show me some of your other skills."

Kensi froze. She'd known this was coming but hearing it was so much worse. Forgetting discretion altogether, she stared as Deeks leaned forward, close enough to whisper in Simone's ear. He stayed there for several seconds, face obscured by her hair.

When he pulled back, Simone's wore a seductive grin. Deeks tucked his board under one arm and settled the palm of his other hand low on Simone's back, guiding her through the sand. As they passed, he caught Kensi's eye for just a second, before he focused on Simone once again.

Kensi wrapped her arms around her middle, sucking in a deep breath to dampen the sick, jealous feeling inside her. Deeks would kiss Simone, seduce her, do whatever needed to be done. And all Kensi could do was watch his back, because they couldn't be anything more.

Shaking her head, Kensi quickly packed up her blanket, sending a text to Sam and Callen before she followed after Deeks.

He was her partner, nothing more.

A/N: I'm not sure Kensi would be able to hear that whole conversation, but I didn't feel like trying to figure out what kind of mic Deeks could use around water. And we'll forget about them leaving all their stuff behind.