Summers were for relaxing, taking a break from the everyday grind, and maybe tossing one's inhibitions in the bin for a while. Over the many years I'd known Terry I'd learned that his cabin, formerly his grandparents' cabin, on Ryan's Bay was the ideal place for just that. Over the years we'd done crazy things and built a friendship. Our friendship turned sexual almost immediately and that had grown to an unspoken affair over time. Through two marriages my special times at the cabin had been daring and incredibly sexual but also very secret.
Now on my third marriage, that unspoken sexuality became a favourite fantasy of my curvaceous wife. When I'd told her about my bisexuality she thought it was hot. When I told her about Terry and I she was more than attentive and began talking about her fantasies of watching us and perhaps joining in. I couldn't be happier! When an opportunity to spend the night at the cabin arose she was excited, a little nervous but definitely turned on. We packed and headed for the lake!
The evening began with drinks (Terry always insisted on drinks) and a supper of grilled steaks and sweet potatoes. We finished supper with more drinks and conversation by the outdoor fireplace when Rhea brought up the question she'd been dying to ask.
"So Terry, are you going to let me watch you two? I've heard all about your years of trysts out here. You won't mind an observer, just this once?"
Terry, obviously surprised, was a little tongue tied at first but then smiled that mischievous Terry smile.
"I think we'd better go inside then," he responded and started heading inside. Rhea and I followed close behind.
Inside Terry began undressing and I followed suit. The electricity of the two of us openly undressing in front of Rhea was incredible. She watched attentively as both of us dropped our clothes and inhibitions to the floor.
"Well?" she said expectantly.
"Don't you think you could help us out a little?" Terry suggested and took Rhea's hands to guide her to each of our semi-rigid cocks.
Rhea took the hint and began slowly stroking our cocks before dropping to her knees in front of us. Alternating between us with her mouth and hands, we were rock hard in minutes and thoroughly enjoying the show.
"Now it's your turn," she said, looking up at us expectantly. "Hop up into the bed. I want a show!"
Obediently we climbed into Terry's bed and began to suck each other's cocks, first in a sixty-nine position but then getting more comfortable side by side. Rhea had disrobed now and was joining us on the bed. She lay next to us, propped up on one elbow, slowly playing with her hardening clit, watching Terry and me. I could hear her getting excited, her breathing becoming more laboured and the sound of wetness coming from her pussy.
"Oh god! This is too much! I need a cock inside me, NOW!"
Her desperate request made Terry and I stop and smile at each other. We were both thinking the same thing.

I lay down on my back to let Rhea climb on top of me. Instantly I felt my very hard cock slip inside her very wet, very hot pussy. She sunk down onto my shaft and leaned forward letting her large, soft breasts brush against my chest. I could feel Terry on the bed getting into position and spread my legs to let him get closer. I held Rhea close and whispered to her.
"Just relax, dear. Your wanted a cock inside you. We're going to see if you can fit two."
She looked into my eyes, half wantonly but apprehensive too. The idea of two cocks in her had been something she'd dared not entertain but in her wildest fantasies. Now, so wet and so near her orgasm, she was ready for the reality.
Terry began by getting his cock wet in her copious juices, sliding the head along her slit and next to my shaft. Thoroughly covered in her slick sexual excitement, he began pushing himself inside her pussy next to my cock. She gasped slightly as his head began pushing into her now very tight and increasingly wet cunt.
"Oh my sweet God!" she cried and began shaking with her orgasm as Terry pushed into her balls deep. She tried to move against the hard cocks impaling her but her orgasm was too strong. As Terry and I began to alternately pump into her and then withdraw, Rhea lay helpless against my chest, raising up a little between her orgasms when she could, her heavy hanging breasts touching me nipple to nipple.
I could feel my orgasm building and Rhea could tell. The look on my face, my breathing, and the stiffening inside her told her I was about to explode and fill her with my seed. She watch intently as I stiffened and shot her full of cum. Terry was continuously ramming his cock into her as she came, watching as I came, and feeling warm cum begin to ooze from her well fucked pussy with his every stroke.
With a few last violent pushes Terry came hard inside Rhea's sopping wet cunt, pushing hard against her round white ass and holding onto her hips to get deep, deeper, deepest into her. As his orgasm subsided we felt his weight draped across us, the three of us still joined in a sticky, juicy but wonderful sandwich.
Slowly we began to uncouple, juices slowly leaking everywhere as Terry and I withdrew. Rhea rolled off me and stretched out onto the bed with a long, satisfied sigh. Terry grabbed a couple of tissues, trying to keep Rhea's gaping pussy from making a mess of his bed.
"You two are bent exactly opposite," she explained to me. "When the head of your cock is inside me it hits my G-spot just right and I cum so hard but with both of you inside me, alternatingly hitting my G-spot, I was orgasming almost constantly!"
Terry and I smiled at each other.
"So you'd do that again?" I asked.
"Oh God yes!" she replied, almost breathless.
"Tomorrow morning?" I asked, mischievously.
"You're a stinker!" she said, but she didn't say 'no'.
