I shared a quick look with Zofi while the brunette still had four of her fingers crammed inside of her best friend's rectum. She raised her eyebrows, gave me a ‘Can you fucking believe we're doing this?’ kind of look, and waited for me to get into position. I saw the bottle of Lube and went ahead and squeezed a line down the Length of my cock. Zofi reached over and rubbed it all over my skin, getting my cock well-coated, and only then did she finally extract her digits from

Sam's stretched sphincter.

A gaping hole awaited me, although its diameter still looked much smaller than my mushroom head. I pressed myself into the gap, took hold of Sam's hips, and started pushing.

“Guuuuhhh..." Sam grunted at the first penetration, her head popping up. I was suddenly reminded of my thought to have a mirror in front of her so I could've witnessed her reaction, although I tried to pack away that selfish thought. Last night, Naimh had been a lot hornier and entry had been a lot easier. Tonight, Sam seemed to be doing this more out of determination than actual lust, and those intentions made all the difference in the world.

Zofi backed away from us while I gripped Sam's hips firmly and tugged her body towards me as I simultaneously thrust my hips forward. Sam's anal chute was tight, much tighter than Naimh's had been, and I had to work harder to slowly burrow myself forward through that constricted canal inch by inch.

“Fuck, fuck, fuck, fuck, fuck," Sam was muttering with her head hanging down. Groaning, she folded her arms atop the mattress and bent down to bury her face against them, clearly in pain but just as clearly determined to keep going. I wanted to stop my forward motion and ask if she was alright. But in my mind's eye I could already see her barking at me, ‘Shut the fuck up, Matty, and FUCK my arse!*

Her obvious pain, however, neutered my enjoyment of the moment. I had no doubt she could handle it -- or more to the point, she would force herself to handle it no matter how much it hurt. I couldn't claim to know what was going on in Sam's psyche, but regardless of whatever kumbaya moment she'd had with the girls this morning about not undermining each other and declaring their vows to never steal me from their friends, Sam's competitive edge had not dulled in the slightest.

"Don't think I didn't notice the way you were making out with Mari on the couch during the movie while I was riding you,' she'd said this morning.

‘Don't think I didn't notice when Naimh deep-throated you while you were blindfolded,’ she'd said barely half an hour ago.

That Sam would be giving me her asshole had apparently become a given once Naimh upped the ante last night. I still didn't know whether or not she was trying to “buy” my Love -- we'd never really come to a resolution on that part -- but regardless of her motivations, this WAS happening. Failure was not an option. And no matter how much it hurt her, and no matter how much I hated seeing her in pain, I had to do whatever I could to help her succeed.

Finally, I had every Last inch in. Sam was copiously wet, and by that I mean her skin had a fine sheen of sweat all over her body. She looked like she'd been through a torture chamber, but I summoned a sense of congratulations into my voice as I told her, “That's everything. You took it all."

“Guuuuhhh..." Sam grunted, not raising her head or otherwise moving.

She took deep, calming breaths, seeming to relax a Little now that she knew there was nothing left to try and cram inside. I rubbed her Lower back, bent over and kissed the base of her skull, and then returned myself upright, staring down and allowing myself to marvel at the complete disappearance of my thick dick inside Sam's most sacred hole.

“Fuck my arse," Sam muttered softly.

I chuckled. "We don't call it that here in the States."

"I'm Australian. And you didn't seem to mind Neevie yelling, ‘Fuck my arse' last night."

“And you're never gonna convince me we're doing this just because you wanted to gift me your virginity, that it has nothing to do with

Neevie, if you keep bringing her up."

“Shut the fuck up, Matty. I LOVE you, but... just... lemme do this, alright?"

I sighed and replied, “Shutting up."

“Ooh, she looks like that really hurts a lot," Zofi said, wiping her now-clean hands having momentarily stepped away to the bathroom.

“I need a polaroid of this moment to remind me NEVER to let you do this to me, Matty."

“He's just so fucking BIG. I feel Like he's tearing me in half. Maybe if you found a guy with a skinnier dick.”

“Never gonna be another guy touching me but Matty," Zofi pronounced with dead seriousness. "Never."

I arched an eyebrow in surprise at that comment, especially from the girl who had just proclaimed this morning that she wasn't in love with me at all. But Zofi didn't even look at me. Her attention and concern were both entirely on Sam.