How does that work

Cas and Ali

Sam shook his head as he stopped in the kitchen doorway, glancing in as he passed by, and saw Ali and Cas sitting quietly at the table, locked in what seemed like an endless staring contest, until Cas suddenly sat back.

"I'm sorry, I just don't understand."

Cas was definitely flustered, and when the angel was flustered, it meant that somehow Ali had gotten the best of him, so Sam had no choice but to stick around.

"Do I really need to explain it again?"

"There is a distinct possibility that you just might have too, there's just some parts of it that I don't quite get."

Ali sighed, "okay, once more from the top, right?"

"Yes, that would be for the best."

Ali stretched her arms behind her head, giving Sam a shot of her smooth stomach and he felt his own clench in desire. They had woken up together in a very heated need to touch and be touched but it didn't stop him from wanting her again, and now was no different. He was so caught up in how she moved that he jumped when she slammed her hand down on the table.

"Okay, ready."

"Yes."

Okay, this could be interesting.

"You have a left and right trigger, which is pretty simple enough to get to, usually you can use your pointer finger on both, but you just have to know how to press it and when, like wait until that very moment where things are about to go completely sideways, and then flick, flick."

Sam watched the movements of her hands as she held them up and suddenly the conversation got even more suggestive.

"You with me, Cas."

"So far, yes."

"Okay, your thumbs are great, especially if you use them this way."

Sam watched her move both small digits in a rotation that almost made him stop breathing, his thoughts going to just the small gestures she made as she swiped them over his nipples. Christ was she giving Cas sex lessons, and for who? Even the previous move, with the way her pointers curved reminded him of several things she did to him, and Sam tried to not visibly shiver.

"You with me so far?"

"Those were the parts I understood, Ali, there's no need to repeat it."

"Then what is it, Cas?"

"How do you, as you put it, "drive it home", how exactly does it work?"

"Come to my room, and I'll show you."

Sam wanted to step in, but he was kind of curious on exactly what was going on when Ali rolled her eyes and stood from the table.

"Can't we just do it here? I'm not so sure that going into your room is a good idea."

"Sam won't mind, trust me."

Wait, Sam blinked, seriously, what the hell was going on.

"But it's your room, bedrooms are very intimate places."

"And also very private, so come on Cas, it won't take more than fifteen minutes, tops."

"Is that all?"

"Yes, seriously, Sam won't mind."

Sam backed away, moving towards the library, in just enough time to duck around the corner so that he wouldn't be seen as Cas and Ali moved towards her room. Once the door was shut, even though it was still cracked a little, he moved down the hall to stand beside it.

Okay, eavesdropping was probably pretty childish but Sam just had to know what was going on.

He heard the bed squeak, which meant one of them was on the corner towards the middle of the bed facing the wall, and he knew the noise because it was the spot he tried to avoid. There was no other sound in the room except shuffling of drawers and other things. Drawers that ground together as the slides moved, which meant something from the bedside one closest to him.

Sam felt the heat rise in his chest, his heart thump against his rib cage and he closed his eyes. He knew that nothing would go on between them, not in the way that she was with Dean but there was just something about the sounds going on behind the door that made him, well, Sam openly admitted he was a kinky bastard.

"Okay, we'll start slow, Cas, and then build up to it."

"I appreciate you taking the time to explain it. Dean hasn't exactly been helpful in this at all when we're together."

Wait… Dean and Cas? Together? Sam admitted they had a pretty close bond but there was no way that Dean was… no, not with Cas.

"Yeah, well, that one there needs a kick in his ass for trying to get you to do this without actually teaching you anything before roping you into it. Okay, so," the bed squeaked again and now Ali was sitting beside him. "Wanna flex your fingers before we start, they might get cramped. Seriously, Cas, how could you have let him do this to you and never once figured out the right way."

"Angels aren't the type of beings that…"

"Dump the angel excuse, honestly, Cas. It's been nine years in the making, but it's still not a reason to jump into this without some proper training."

"Can we not discuss how long Dean and I have known each other and continue with what we were discussing."

"Okay, okay, jeez, impatient much?"

"Ali, please."

"Alright, so, take your hands… and put them here."

"Right… here?"

"No, Cas. Here, let me just…"

Sam heard her give a low moan, and suddenly he felt himself straighten, and his cock hardened. He loved that noise, with everything he had, but he was curious now as to where Cas might have touched to make her do that.

"Son of a bitch, Cas, just relax."

"My apologies, I didn't realize I was doing that so hard."

"It's… it's okay, now, are you ready."

"What is this for?"

Ali sighed, a breathless sigh that told Sam whatever was going on she was in need.

"Just watch, okay, I'll tell you when."

There was silence in the room for a moment as the bed squeaked just a little under movement and Sam clenched his hands into fists, as if he were trying to force himself to stay put by applying pain to the situation.

"Yes! No! Wait. Now, Cas!"

"Ali, I don't…"

"Come on, right now… now, now. YES!"

That made Sam spin in place and he flung open the door, but he stopped dead in his tracks. Both Cas and Ali turned on the bed, fully dressed, and looked up at him. Sam's chest was puffed, his breathing labored but his eyes went down Ali's bare arm to the video game controller in her hands.

Confusion marred his face as his gaze went up to the flat screen in front of them and he shook his head.

Ghost Recon? Ali and Cas were playing a video game.

"You okay, Sam?"

But the smile on Ali's face made him so NOT okay, because she could see everything he wanted to say just by his expression.

"What the hell?" He asked and Cas stood slowly.

"I told you this wasn't the best idea." The angel turned to Sam.

"It's okay, Cas, I just…"

"Can I finish my lesson here, Winchester? You're brother has been kicking his ass for months on this game and I think Cas needs to step it up a little, so either come in or go out."

"Alright," Sam grinned and winked at her as she grabbed Cas' arm and brought him back down to the bed, the springs groaning under his weight and slowly the two settled into a rhythm. Sam relaxed and slowly back out of the room as Dean came down the hallway.

"You seen Cas?" Dean questioned following Sam to the kitchen for coffee.

"He's in with Ali getting a video game lesson."

"What? He's an angel, he should be great at everything."

"Apparently not."

"Wait, how does that work? Ali teaching him anything, and why aren't you in there chaperoning?"

Sam just grinned, sat down at the table and took a sip of his coffee. He wasn't even going to touch this one.