She's been waiting for this...

The time between them exiting the shower to lying on the bed was probably a new world record. Tony lay on his back, staring up at Katie's beautiful face. There was a brief flash of... something... in her eyes. Sadness? Joy? Regret? Love? He couldn't quite tell. But if it really was something negative, he couldn't just let it go. "Hey, are you okay?"

Katie stared back at him, tears beginning to form in her eyes. "I'm fine. I just... I've wanted this for so long, and... it's finally happening."

Tony reached up and cupped her head in his hands. "Of course it's happening, Katie. I've wanted this... wanted you... for a long time, too."

A tear fell, splashing onto Tony's cheek. "When... when you told me what happened to you, I... I gave up any hope that this would ever happen." More tears began to well up, but Tony gently wiped them away with his thumbs. "Even now, I worry that... that you'll change your mind. That you'll want someone with a... a... whatever they have in your world."

Tony pulled her down, and their lips met, their tongues exploring each other's mouths. When it finally had to end, Tony held Katie close and said softly, "You don't have to worry about anything, Katie. This is my world now, and I don't care what you have. I'm in love with YOU, not your junk." And Tony kissed her again. However, Katie seemed to be back to her usual, competitive self, and took control of the kiss. She moved from his mouth to his neck, then slowly down his chest. Tony was content to let her "win" this time. This was a special moment for her, and Tony wasn't about to ruin it for anything. She moved down his stomach, before making it to his erection. She began teasing it with her tongue, licking around the head. She slowly started to take the whole thing in her mouth, but Tony spoke up. "Katie, please."

She looked at him, her mouth still full of his penis. "Hmmm?"

Tony's face turned red. "I... I don't know how many more times I can go today. I don't want to blow before the main event..."

Katie reluctantly stopped her blowjob. "You're no fun," she said, in an exaggeratedly disappointed voice.

"Would you rather I be too tired to continue?" Tony asked, a small smile forming. "Does that sound fun?"

Katie shook her head. "No. But you know what does sound fun?" Without waiting for an answer, she stuck a finger up Tony's ass. "THIS!"

Tony's hips bucked as she hit his prostate again and again, working a second finger inside him, forcing drop after drop of precum out of his dick. She slowly moved her fingers apart, stretching his hole again. Unlike earlier, it didn't hurt as much, and she was able to get it a bit wider. Not nearly enough for her to go in without a lot of lube, but enough that she was willing to go in at all. And then she remembered something. "Oh, shit."

Tony looked at her in shock. "What?"

It was Katie's turn to blush. "Uh... We forgot the lube."

The color drained out of Tony's face as he realized the implications of this. "D-do you have any?"

"Well, not WITH me. I wasn't exactly expecting to need it. Don't you have any?"

"No. I mean..." Tony furrowed his brow. "...I don't actually know?"

Katie arched an eyebrow. "What do you mean you don't know?"

Tony attempted to explain. "I mean, I didn't have any in my original reality. But I think I might in this reality? Like, I'm assuming that if I was fantasizing about this, then I would have made sure to have some..."

Katie grinned. "So... where would you put it?"

Tony glanced around his room. "Um... bedside table?"

Katie slid off the bed and walked over to the nightstand, opening up the drawer. She reached inside and picked up a small bottle. "Well, look at this. You were right!"

"I figured it'd be with my, uh..."

Katie held up a strip of condoms. "Condoms, yeah." She glanced at them. "No offense, but I don't think these'll fit me..."

Tony looked at his average sized member, then suddenly had a terrifying thought. "Wait, uh, do you NEED those? Like, will I get, uh, pregnant?"

Katie burst into laughter. "No, Tony, no. Men can't get pregnant. Don't be ridiculous!"

Tony breathed a sigh of relief. "Oh thank god."

"Really?" Katie wheezed out between laughs. "Why would you even think of something like that?"

Tony sat up. "Look, where I'm from women get pregnant because of their equipment. I have no clue how pregnancies even work here!"

Katie shot Tony a strange look. "Tony... we're about to make love. Do you really want to ruin the moment by learning about the birds and the bees?"

"Um, no?"

Katie popped open the bottle and started lubing up her sizable member. "Good answer."

Tony watched in both lust and apprehension as Katie reached her full size. "Uh, not that I'm backing out, but, uh... are you sure you'll fit?"

Katie smiled gently as she applied more lube. "Don't worry, Tony. You'll be fine." She walked back to the bed in front of Tony, and gave him a light push, making him fall onto his back again. She squeezed some lube onto her finger. "Okay, Tony. If this is gonna work, I'll need you to relax." She began getting his anus ready, applying a generous amount of lube around the outside, before pushing her fingertip inside. Tony flinched and made a noise, causing Katie to stop. "What's wrong? Are... are you having second thoughts?"

"No! It's cold!"

Katie laughed as she crawled up, her body above his. She leaned her head down and kissed him gently. "You are just the cutest man I've ever met."

Tony averted his eyes in embarrassment. "Sh-shut up!"

"Well, if you won't take my compliment..." Tony felt something prodding his asshole. Something big and warm. "I have something else you can take..."

Tony took a deep breath, spread his legs, and tried to relax as much as he could, considering how bizarre his life had become now. Katie looked down at Tony, and paused. "Tony? Are you ready?"

Tony swallowed, took another breath, then looked up at Katie. He nodded. "Y-yeah."

Katie smiled, a warm, loving smile that filled Tony's heart with joy and eased his mind. "Good. I'm gonna go slowly at first. If you EVER want me to stop, just say so." And with that, she began to enter Tony.

Thanks to Katie's fingerwork earlier, Tony was familiar with the feeling of an object forcing itself into his rectum, but this... this was an entirely different story. He felt the head of it stretch his anus, even wider than Katie had stretched it earlier. "Fuck!" He bit his lip and gripped the sheets beneath him tighter. Katie's head had now fully entered, and was slowly pushing deeper. "FUCK!"

Katie instantly stopped. "Are you okay?"

"Yeah, just..." Tony inhaled, then exhaled. "Just give me a second to adjust..." He took another breath. "Okay."

Katie gave him a quick peck on the lips. "You're doing great, Tony. Just relax." She kissed Tony again as she pushed even further inside of him. Tony moaned into Katie's mouth as inch after inch of Katie's womanhood penetrated inside of his rear end, until, finally, he felt Katie's hips against him.

The sensations Tony was feeling were overwhelming his body. At first all he felt was the discomfort of his ass being stretched further than nature intended (although, in this universe, it probably WAS intended by nature), but eventually it gave way to another feeling. A strange new feeling: fullness. Tony wrapped his arms around his lover and held her tightly. "K-katie... I..."

"What?" She whispered into his ear. "Are you okay?"

"I... love you..." Tony hugged her even tighter than before. "So... please... keep going."

"I love you too, Tony. So much." She lifted her hips, pulling halfway out of him. "You ready to get fucked?"

Tony was ready. All of the hangups and misgivings Tony had were gone. This was a completely normal and natural situation in this universe, and honestly, even if it wasn't, Tony wouldn't care. He loved Katie, and she loved him, and she felt so damn good inside of him. In other words...

"Yes!"

That was all Katie needed to hear. She pushed back in, sending a blast of pure pleasure through Tony's frame. "FUCK!" Tony shouted. Katie pulled back out, and thrust back in. And then did it again. And again. And again. "FUCK! Katie!" Tony cried out at every thrust. "Fuck! Fuck! Fuck! OH GOD! FUCK ME KATIE!!!"

Katie sped up, driving in and out of Tony's ass, hitting his prostate each time, as well as rubbing his penis between their bodies as she fucked him. Tony wrapped his legs around Katie, holding onto her completely as she rocked his world.

"Fuck..." Katie murmured in between thrusts. "Fuck, Tony... You're so tight!"

Tony wanted to say something back. Maybe something about how big she is, or how good she was making him feel. Unfortunately, all he could say at this point were random grunts and moans. Luckily for him, Katie was able to understand his meaning. "I love you, too." She sped up even more, battering Tony's ass and prostate with her giant cock, all while stroking Tony's cock with one hand. Katie moved her mouth to her ear and started whispering to him. His brain was trying its best to deal with all of this sensory input, but he could only make out bits and pieces. "...love you..." THRUST "...more than..." THRUST "...so tight..." THRUST "...so brave..." THRUST "...gonna cum..." THRUST

That last fragment managed to cut through all the noise in his mind. "Please..." he whimpered, unsure if Katie could even hear him. "Cum inside me..."

Katie could hear him. And hearing him say that was all it took. She pulled out... then slammed back in. "OH! OH! TONY! FUCK!!! CUMMING!!!"

The final thrust from Katie brought Tony to orgasm as well. They both came, Tony onto their stomachs, Katie deep inside Tony's body.

They lay there together, Katie on top, dick still buried in Tony, who was holding her as tight as his exhausted body could.

"Wow..." Tony managed to wheeze out. "That... that was... incredible."

Katie pulled out of him, causing quite a mess as she did so, and rolled off of him, lying down next to him. "I... I dreamed of this for so long..."

"Me too." Tony placed his hand on Katie's, and interlaced their fingers. He squeezed, and she squeezed back. The two lovers lay there together, holding hands, basking in the afterglow of this magical moment, until finally, sleep overcame them.