Rule 6 - Check the room for sneaky assassins before any clothing is removed.

"Hi," a tentative voice that Darcy recognised immediately as Bruce's came from the doorway to the small gym below the residential floors of Stark Tower.

Darcy dropped her arms and stepped back from the punching back, a huge smile spreading across her face. "Hey you," she said, wiping at her forehead with a taped palm.

"You busy?" he asked, "Because I can always come back later if…"

"Will you just get over here Bruce," said Darcy impatiently, making grabby hands at him with an impatient smirk.

"Yes ma'am," he said, in his best Captain imitation, with a lazy little salute he strolled over, hands in his pockets. He stopped right in front of her, pushing into her personal bubble ever so slightly. "Well?" he raised an eyebrow at her, "I'm here."

Darcy was still having a hard time believing it, actually. It had only been two weeks since they finally admitted to each other that angst was overrated and making out in the lab was much more fun. (Bruce had fought it a lot harder than Darcy, but she wasn't going to bring that up…often) And Bruce, already fairly present in her life, had become a fixture. Now that he felt it was allowed, he was constantly in her space, finding reasons to touch her, a hand on the small of her back, fingers brushing back her hair, hip brushing against hers as they passed in the lab. Getting really unsubtle eyefuls of her rack. Like right now, for example.

She grinned widely at him. "See something you like doc?"

"Yes," he said, that slow burning smile that made tension ping in her belly spread across his face. It drove all the wit right out of her.

"Uhh…I am trying to think of a sexy response but I can't because I think I might die if you don't kiss me right now." She stepped up against him, arms around his waist, chin tilted up to look at him with sparkling eyes.

"Can't have that," he murmured, half against her lips as he lowered his head to meet her, pressing his lips against her slow and sweet until she opened under him, sucking his lower lip between her teeth.

He made a little noise, halfway between a groan and a grunt, low in his throat, that Darcy was quickly coming to learn meant something between yes and more. His hands worked their way under her t-shirt, fingers pressing into her sweat damp skin, tracing lines across her scarred back in a way that didn't bother her at all, but made her feel strong and beautiful.

She gasped out loud, breaking away from his mouth, tugging impatiently at his shirt until he helped her pull it over his head with a low chuckle.

"Aren't you supposed to be," he paused to nip at the spot right below her ear that made her go a bit boneless, "training?" he finished, sucking gently at her skin.

"Hmmm? Oh," Darcy was understandably distracted, one hand tucked under the waistband of Bruce's pants, the other flat against the lean muscles of his back. "Tasha couldn't make it." She slid a leg between his knees, pressing her thigh against the obvious evidence of his arousal. "But I suppose I could go back to the punching bag, if you think I should?" She blinked up at him with innocent eyes, her hands on his ass pressing him against her in a wicked way.

He groaned, "Jesus Christ Darcy."

She just raised an eyebrow at him before quickly pulling her t-shirt off.

"You know," a clear, feminine voice rang out from just behind the free weight bench, "I thought I had given you a gimme when I mentioned we should put some more work into training your observation skills this morning." Tasha melted out of the shadows with a smirk on her face.

"Sweet merciful crap Natasha!" Darcy exclaimed.

Bruce frantically grabbed for his shirt, holding it very unsubtly in front of his crotch. He gave Darcy a look that could have been "Help me!" or "How could you do this to me?"

"You couldn't have said something sooner? When it was really clear we didn't know you were here?"

Natasha shrugged, "I was giving you a chance to recover. Plus, I thought you might know I was there and just be into an audience. I really wasn't hiding very well."

"We did not want an audience Tasha!" she screeched.

"Well," Bruce cleared his throat, "Yeah, but to be fair to Natasha, the gym is a pretty public place, so we should really just, uhh…." He began inching for the door.

Natasha rolled her eyes, "Yes yes, off with you, enjoy your sex. But know that I'm going to kick your ass in the gym tomorrow over this Lewis."

"Oh my god this is so embarrassing," Darcy groaned as she hustled Bruce to the door.

"Sorry!" he called to Natasha, red faced but looking awfully pleased with himself as Darcy manhandled him out of the gym.

"Rule 6" said Bruce, pushing her up against the wall as soon as they were out of the room,

"Check the room for sneaky assassins first?" said Darcy a bit breathlessly.

"I can still see you," came Natasha's bored voice from inside the gym.

Darcy burst into laughter as she dragged Bruce down the hall. "Jarvis!" she hollered, "will you please make sure there are no more sneaky assassins hiding in my room?"

"Or Tony," added Bruce with a grin, "make sure there are no Tonys"

"The room," said Jarvis in a supercilious tone as they made it to her room and closed the door behind them, "Is secured."

Bruce pushed her against the wall, arms on either side of her, blocking her in, an intense grin on his face.

"Perfect."