"Alphonso Mackenzie x Steve Rogers"

Mack was cool as a cucumber as he led Steve into his room. Steve was the clumsy one, stumbling into his soulmate's arms like a newborn foal.

"You gonna show me?" Steve asked.

"Show you what?"

"If you're strong enough to nail me up against the wall?"

"I did promise you that, didn't I?" Mack said, his low voice sending a thrum down Steve's spine. He slowly unbuttoned Steve's shirt. "You sure about this?"

"So fucking sure," Steve said. Mack raised his eyebrows. "Sorry. But everyone I've ever had a crush on… I was always smaller than them, until the serum. Then I just felt gangly and awkward. I wanna feel…"

"Like yourself again?"

"Yeah," he said, nodding, and he rested his head against Mack's chest. "My muscle mass… I don't know—"

"We'll find out," Mack said. He pushed Steve's shirt off and let it fall to the floor, then began to remove his own. "Wanna finish stripping, or d'you want me to do it? `Cause I'm cool with either."

A bit pink in the cheeks, Steve pulled off the rest of his clothes in a hurry. Mack was more sedate, and he watched his soulmate fidgeting as he retrieved lube and a condom.

"Feel like I'm gonna explode," Steve muttered.

"That's the ultimate goal, babe."

"You mean…? Oh." He coughed. "No, not like that."

Mack rolled on the condom, then approached Steve.

"Want me to do this part for you?" he asked

"N-no. I can do it."

"You wanna sit down?"

Steve winced sheepishly. "Probably best."

Mack sat beside Steve, stroking his chest as Steve stretched himself out with little whines and gasps. His pink lips were parted, and Mack couldn't help but kiss him, Steve's heartbeat rapid beneath his hand.

"Always thought I'd wait until I'd been through some kinda ceremony," Steve murmured against Mack's lips. "Now I understand why people didn't wait. Thought it was just `cause of the war, but it's not. It's… it's this itch under the skin, and it gets better when I touch you, but it's still there and I just want you everywhere."

"Coulson wouldn't be happy about that. Seems he's already pissed about Stark and Fitz being soulmates."

"Okay, why are we talking about the director at a time like this?" Steve said. "Because that's not making me feel any better, Mack."

He chuckled, slicked himself up, and then helped Steve stand. The soldier wiped his hands on a tissue and threw it out, then stepped closer to Mack and tilted his chin up. Couldn't get a better invitation than that. Mack pushed him against the wall, and Steve yanked him in for another, hungrier kiss. Mack lifted one of Steve's legs, held it against him, and tentatively tested the soldier's weight. Seemed like being a mechanic was gonna come in handy in the bedroom, because he hefted Captain America up. Steve yelped, grabbed Mack's shoulders, and arched against him.

"Oh God, that's it," he hissed. "Been waitin' for that."

"Can you hold on?" Mack asked. Steve nodded, and wrapped his legs around Mack's waist. Their soulmarks brushed lightly, but Mack chose to concentrate on nestling between Steve's legs. He rubbed his tip around until he found the spot, and then pushed in gently. Steve whimpered, and Mack paused. But Steve shook his head.

"Keep goin', Mack," he said. "Please. I can take it."

"Sure?"

"Need it hard. Need t' feel it. Please, Mack, please."

Mack thrust the rest of the way, as hard as he could, and Steve gasped and tightened, coming between them already.

"You alright?"

"I'm okay! Just keep goin'."

Rocking in the rest of the way, Mack watched Steve's little smile of bliss. He grabbed his soulmate's hands and held them against the wall above his head in one hand. Steve's eyes darkened immediately, his breaths growing heavier and more erratic, and Mack used his free hand to pin Steve in place. Then he took over, ploughing in and out, grinding every time he hit the spot that made Steve jerk in his grasp. A definite heat began at the base of his spine, and he realised that that's where their soulmarks were meeting.

"Mack, please! Please, don't stop!"

"That's right, baby, take it," Mack whispered. By now he really was pounding Steve into the wall, dragging another orgasm out of him and adding to the wetness on their chests. "Fit just right on my cock. You feel that, don't you?"

"Made to fit," Steve said. "So deep. Mmm." He kissed Mack again, sucking his tongue, and any control Mack had left completely fled. He bit Steve's lower lip, ran his hand around to Steve's lower back, then pulled a few inches away from the wall. Without proper support, Steve slid down further, pushing Mack as deep as he could go, and bringing them both to climax. The bond flared strongly, and Mack let go of Steve's hands to hold onto him. Steve slung his arms around Mack's shoulders, the tremors in his body obvious this close, and the emotion strong across their bond. Eventually, Mack carried Steve to the bed, and was concerned when he saw the tears pouring down his soulmate's cheeks.

"Steve?" he murmured, stroking the moisture away. "Did I hurt you? Was it your first time?"

"No to the first, yes to the second. Like I said, I planned to wait. But I can't feel any pain, and I'll heal up pretty quickly, and… it was amazing."

Mack pulled out, and disposed of the condom before grabbing flannels to wash off the mess. He dried them with a towel as well, as Steve lay sprawled on the bed. He felt pretty jelly-legged as well, but he wasn't the one whose ass had just been reamed beyond recognition. Steve shifted to the far side of the bed and Mack flopped down beside him.

"How're you feeling?" he asked.

"Glowing," Steve said.

"Well, I used protection, so you can't be pregnant."

Steve gave him a withering look. "Thanks for the reassurance." Mack chuckled, and Steve tapped him on the chest. "What now?"

"Rest. I'm not up for another round just yet."

"I didn't mean that. I meant…"

Mack sighed. "Look." Steve frowned. "Apparently Fitz and Stark are soulmates. Now I don't know your buddy boy, but if he hurts Fitz there'll be hell to pay from all the rest of us, and it's gonna hurt him if Stark leaves."

"I don't think Tony will wanna let go of Fitz," Steve said. "Unless he tries to be stupidly noble. Not a good look on him, but it's partly my fault for challenging him when we first met."

"Noble?"

Steve shrugged. "If he thinks Fitz is better off without him, he'll do everything he can to break it off. Won't work if they bond first. But Tony's trying to be more of an adult than adolescent these days."

"He better not hurt Turbo."

"Is Fitz confident enough to recognise that Tony's being self-sacrificing?"

"I can't believe we're talking about them when we've just had sex," Mack said.

"I'm sorry! I'm new to all this. I'm just trying to keep the conversation going. Any conversation really."

"Why? Are you embarrassed about how wanton you were?"

Steve sank down in the covers, cheeks turning redder. "Maybe?"

"Damn, babe, you got nothing to worry about. You're sexy as hell, and I'm the luckiest guy alive."

He grinned as Steve buried his face in Mack's shoulder, blushing even harder. Mack pulled him close, and Steve latched on, exhaling through his nose.

"Could fall asleep like this," he mumbled.

"Can't reach the blankets, so you're gonna have to hope that no one comes knocking, `cause they'd be in for one hell of a sight."

When Fitz called, Mack was only half-surprised.

"What's up, Turbo?" he said tiredly.

"Uh, first, congratulations on finding your soulmate."

"Notice you didn't introduce me to yours."

"That's, uh, the second thing. He… he left me."

Mack sighed, and prodded Steve awake. "I hope mine's not grumpy when he's woken up from a deep sleep."

"Can't say no to you," Steve said through a yawn. "What is it?"

"You were right about Stark making the sacrifice play." Steve blinked at him, and Mack put the phone on speaker. "You got both of us, Fitz. Tell us what happened."

"H-he said he didn't think we'd w-work out."

"Son of a bitch…"

"Calm down, Mack," Steve said. "It'll be fine, Fitz. Tony does want you, trust me. You're his soulmate. He wasn't sure how old you'd be, and he's a pretty insecure guy, so you've gotta cut him some slack there."

"…But he said—"

"Ignore what he said."

"Maybe…" Fitz sighed. "Maybe he's right. I may be a genius, but I… I have trouble with words…"

"You're a lot better than you were when I first met you, Turbo," Mack said.

"I'm b-broken. He would've seen that. Doesn't matter how smart I am, I'm still… I'm not a billionaire, I don't come from that kind of background."

"You're a regular Cinderella story."

"Fitz, I'll talk to Tony," Steve said, pinching the bridge of his nose. "He's being an idiot about this, and I'm gonna tell him so."

"No, don't. It's nothing. It d-doesn't matter. I shouldn't have bothered you. I'm sorry."

"Turbo—" But Fitz had hung up, and Mack sighed. "Well, this is gonna be fun."

Steve grumbled as he sat up. "Need to get my phone."

"I'll grab it for you. Stay there, Steve."

"I was lookin' forward to you screwing me into the bed, but I guess that's gonna have to wait."

Mack nearly tripped over, and looked back at his soulmate. "D'you think giving relationship advice can wait until we've renewed our bond?"

"Hmm." Steve blatantly ogled him. "Or the anticipation will make it all the sweeter."

He tossed Steve's phone onto the bed. "Get on to Stark and tell him he's being an idiot. I'm gonna take a shower."

"D'you think if you'd come inside me, I would've still been wet enough for you to just slide back in and take me right now?" Steve said, playing with his phone.

"…You were the one who said something about anticipation."

"Did I? Hmm. I guess so. The waiting will be even worse now." He grinned, still not taking his eyes off his phone. "You'll be so desperate when we get back to your room that… well, I won't be walkin' right for a long time after that." He shivered. "Maybe we'll bond in the bed this time."

Mack couldn't move from where he was. Steve looked up and met his eyes, then looked him over. His eyes widened.

"What?"

"How the hell did that fit inside me?" Steve said incredulously.

"Maybe I should just show you now? Save the anticipation for another day, when we're not newly bonded."

Steve chewed his lower lip. "I did just send a message to Tony, telling him to get his head out of his ass. Let's… yeah, okay. Come back to bed."

You all wanted to see this scene. Now you've seen it, and heard a bit more about Tony and Fitz from that chapter. Obviously the 'Size Difference' chapter, since it's the only one with Steve/Mack. And I'm still not impressed with 'real' SHIELD. Just watched episode 12 with Mum last night, and of course she doesn't know what Mack and Bobbi's big secret is, so…

Please review! Ooh, I'm on Fiction Press, and I've started posting a book I wrote… uh, last year? Under the username CeliaEquus, of course. If you like romance, and musical references, go ahead and check out 'Stormy Weather'! First chapter already up.