I felt awkward for the next week and didn't call Robert. I mean, what do you say to your best friend when you're both married, and you have just sucked his hard cock and then found yourself bent over his bathroom countertop, while he grunted and shoved his cock deep into your ass? How do you go back to small talk when you've felt your friend lying on top of you, his balls resting against yours while he gasps for air after shooting his cum deep inside you?
But then, how can you give up the chance to do something so erotic again, to look over your shoulder into a man's eyes, his pupils wide open with excitement, as he fucks his "girlfriend" and gasps out how much pleasure you're giving him?
However, it's one thing to do all that when you've got a buzz going from all the alcohol you drank, and you're sexually aroused and in the heat of the moment. It's different the next morning, when you're sober and have a hangover and are feeling a bit ashamed about doing something that you've been told all your life is wrong and immoral. And so, looking in the mirror while blearily shaving the next morning I resolved to pretend none of that wild sex really happened, and that I would go back to being totally straight and monagamously married.
I kept that resolve right up to the moment when Robert called me the following Friday and invited me over to hang out and "talk story" with him while his wife went out on the town with some girlfriends.
So that's how I found myself in Robert's house on Friday, chatting with his sexy, plump wife, Carina, as she put on pale pink lipstick. There had always been chemistry between Carina and me, some discreet flirting with plenty of plausible deniability that what we really wanted to do, if we weren't both married to someone else, was tumble into bed and fuck our brains out. Not that we ever said anything like that. It was more the way she'd find excuses to touch my forearm, or playfully punch my chest when my jokes crossed too far over the line, or the way her pupils would open wide with excitement when we talked. I loved her large breasts and big, sexy round ass, and her perfect face with dark eyes and light mocha skin that reflected a delightfully exotic blend of Filipino and Hawaiian and Scottish ancestors, that hapa local girl look you see so much of in Hawaii.
Carina looked at me in the mirror. "Do you think this dress makes my butt look big?"
I stared at her silky red dress and matching high heels, and at her big, sexy, voluptuous butt revealed by the slinky material. "Oh, hell yes."
She started to pout and give me stink eye, perhaps thinking I was insulting her.
"I love your big booty. It's so – well – mmmmh. Makes me want to reach out and give it a pat every time you walk by."
"I'll have you know I'm a happily married woman, you insolent scoundrel."
"You say it like being a scoundrel is a BAD thing."
"God help me, I do like bad boys." She gave me a sultry, heavy-lidded look, then dropped her lipstick in her purse. "Well, gotta hele on out of here."
***
Robert and I watched through the living room window, waving as Carina drove off. Then I shyly turned and gazed into his smoldering eyes, and I knew right then he wanted to exchange something more tangible than chitchat that night.
Robert grinned at me, then boldly reached over and squeezed my ass. "I've missed my sweet sexy girlfriend so much. Why didn't you call? Every time I fucked Carina this week, I imagined that it was your 'pussy' I was pumping my cum into."
I gently disengaged his hand from my butt, but gave his palm an affectionate squeeze before I released it. "Look, I think it was a mistake. I'm not bi. Can't we go back to being just friends, and pretend all that never happened?"
Robert's eyes narrowed, then he gave me a mischievous grin. "Fair enough. Tell you what, let me ask you a couple questions, and if you pass them as the totally straight guy that you undoubtedly are, we'll say no more about me fucking your ass last week and you taking it like a totally not-bi bitch and loving it. Deal?" He put out his hand, offering to shake.
I gave him a wry grin. "Well, I object to certain premises in that loaded statement, but, hell – sure. Fire away." I took his hand and Robert shook it. And kept shaking it, his eyes boring into mine. I tried to disengage my hand, but he grasped it tighter, and started tugging on it, dragging me into his bedroom.
"Umm, what the hell are –"
"Part of the experiment," Robert said, briskly. "Gotta do the proper environmental protocols to run this test right. Wouldn't want to call the validity of our experiment into question, now would we?" We were in the bedroom by then, standing next to the nightstand by his bed. He pulled me close, his lips inches away from mine.
"First question – and remember, you're gonna answer all of these questions honestly – do you enjoy this?"
He leaned in and lightly kissed my lips. Startled, I thought of pulling away. But I didn't. God help me, I didn't want to. Robert's tongue pressed against my lips, and I reluctantly parted them, and then he was pressing against me and, let's face it, fucking my mouth with his tongue. I tried not to, but I gave a soft moan of pleasure. Robert broke the kiss and said in a low, husky bedroom voice, "Again – did you enjoy that? And remember, we've got a truth meter here in case you try to lie." His hand slid down my waist and touched the stiffening bulge in my shorts.
I closed my eyes and sighed. "OK. That I kind of liked." I reopened my eyes, and saw the corners of Robert's eyes crinkled with amusement as he kept stroking my cock.
"Damn. You're totally straight so far. My bad for ever doubting you. Second question – would you like me to do this?" He slowly unzipped my shorts – as usual, I wasn't wearing any underwear, too hot in Hawaii for that -- then slid a hand inside and cupped my balls and gently kneaded them. I grunted with pleasure. "And remember, I've got this truth meter to check on in case I think you're fibbing." His hand grasped and resumed stroking my hardening shaft. The warmth of his palm felt so good. "Well, straight boy? Whattaya say?"
"Unnnh. Don't stop. OK, OK, I like that too."
"Still totally not-bi, hunh? Third question – do you find this to be unpleasant?" Robert's free hand reached around and squeezed my ass, then his hand slid under the waistband of my shorts and cupped one of my buns. His hand slid between my cheeks and teased me, brushing close to my hole but not quite touching it.