My orgasm was building. I was trying to hold back- to ignore the beautiful, shapely woman dominating me and sending electricity through my deepest, most intimate muscles with her words- but my mind was already racing forward to what was to come.
Visions of her doing this exact thing with someone else- riding them, breasts bouncing, stomach taut, light perspiration and buttocks rippling as she moved- made me wonder how different it would be. Would she come during sex? How would it feel for him? How would her pussy feel on a penis that was so much larger than mine? I imagined them both orgasming together and the sexual power they both had in my mind multiplied to create something overwhelming and unstoppable. My buttocks clenched as I grunted and forcefully came into the condom. She never stopped making eye contact and grinned a little as she looked down at me.
I'd always known Eliza was out of my league but now she was making this so clear- she lifted herself off my dick and shuffled forward, then sat back on her heels, lowering her labia down onto my face. I had come, so was feeling those ripples of embarrassment and inferiority again, but I licked obediently, seeing her fingers moving deftly above me, also rubbing her clitoral area. She had always said she was too shy to masturbate in front of me, but now she was sitting on my face, doing it right above my mouth.
Whatever transformation was happening, it was already well underway.
'Yeah, that's it, that's it, that's it... unnnggghhh!' She very quickly came, falling forward onto her hands and pressing the soft underbelly against my forehead, the light sheen of sweat causing her skin to stick slightly to mine.
In this strange, post-coital haze, we were a mess. Her slippery wetness and the smell of the condom's latex was now on my mouth and lips from licking her, and she was lying beside me, arms akimbo as if passed out. It was the weirdest, most passionate sex we'd had in a long time. I just regretted, again, that it wasn't me who'd brought this on.
_____________
The tension leading up to the flight the following Saturday was unbearable. Eliza was busy as usual, wrapping up various projects and delegating tasks and I only saw her late in the evenings. Despite being tired from work, she was energised and intoxicatingly vivacious. She very gently rebuffed the odd moment where I'd try and initiate sex and responded to my kisses with an affectionate but firm laugh. She didn't mention the upcoming holiday that we were both going on, except to ask if I'd seen her passport, if I'd packed and so on.
Things became even more erotically charged when the parcels started being dropped off. The first was a swimsuit she'd ordered which opened at the navel and then branched diagonally outwards, covering her nipples but showing a huge amount of side cleavage. Then came a beautiful black corset and suspenders that she asked me to rate. I gazed at her as she modelled it for me, leaning back so that her delicate stomach stretched back and then turning so I could see her beautiful butt, the generous shape of it being perfectly accented. I was speechless, struck dumb by the fact that I'd had this woman just to myself for six years and was now going to watch someone else dominating her.
More things arrived - lingerie, beautiful summer dresses, hot pants. I'd been so frugal over the last few months and was reminded of how casual she was with money- how she could afford to be. And now we were being flown out to a Greek island by an absurdly rich businessman our age.
Due to the pattern of my shifts that week, as well as other chores like shopping and so on, I didn't even get chance to masturbate. The odd moment that I might have got away with it, I felt some strange sense that I needed to retain my sexual energy, to make sure that I could perform if Eliza wanted me to. She seemed completely abstinent over that week too, but I could see in her flushed face and excitable demeanour that she was full of erotic charge.
______________
Saturday morning came and we got up at 9am. After a quick breakfast, we waited for our taxi to the airport (paid for, of course, by Eliza's new lover) and, at this point, she decided to address the elephant in the room.
'So... we're going away together so that I can... have sex with another man in front of you,' Eliza said.
'You don't need to remind me of that,' I said.
She smiled. 'I know, I know. I'm just taking in the situation- how crazy it is! How... seedy it is.'
I thought back to that 'watermelons' text and cringed slightly as I remembered my frenzied behaviour that night.
'I just wanted to say... if you are not up for this...' she said slowly. 'If you definitely don't want to do this... we can change our minds right now. I will understand. We can go back to normal.'
'Really?' I said, not sure if I believed her.
'Yeah,' she said, looking deeply into my eyes. 'I love you, James, and that's the most important thing of all. I really, really want to do this with Rich, but there are lots of compromises we make in relationships.'
Rich... finally she'd said his name.
'So, you have to tell me, right now... if this is... something you don't want to go ahead with. Because the next few days are going to be really intense. You are going to see me doing things very few other men see their partners do. You are going to hear me orgasming at the hand, or the mouth, or the cock, of another man. This man is bigger than you and...' She tailed off a bit.
'And?'
'Well, he's just what some people might say is an "alpha" male. I know that term is problematic, or now they say it's not a thing but.. it is a thing. There isn't really another way to describe him.'
I nodded.
She continued. 'You're going to experience a lot of different feelings over this time. One of them is going to be lust.' She reached under the table and grabbed my stiff cock. 'I know how much you want me to do this, how curious and fascinated you are. I know that it's, sort of, out there as an idea now and we almost have to just do it to resolve that tension. But I want you to be ready for the other feelings. In the heat of the moment, I may do things... say things... that might make you feel jealous, or hurt, or sidelined.'
'How do you mean?' I said.
'I don't know,' she said, smiling. 'The dynamic will just be very different.'
'Will I be involved?'
'We'll have to see how it feels at the time. The main priority for me... the main thing I want out of this... is to have a more assertive and primal lover and, well... to come from sex, of course. But you will be there too and I am sure you will be allowed to participate in some way, as long as he allows it.'
The thrill of knowing that my girlfriend was already assuming subservience to her new lover sent a surge of euphoria through my balls, as though I was going over a bump on a rollercoaster.
She bit her lip thoughtfully. 'But... you may have to be quite submissive. He's going to dominate me and, well, I'm going to dominate you as I always kind of do.'
'Right,' I said.
'So this is your chance,' she said. 'The taxi's two minutes away. Is it a "yes", and going along with whatever happens next - whatever I ask of you- or a "no", returning to our quiet, content but sexually modest life?'
She was looking at me, deep beyond my eyes, as if seeing into my brain. I felt embarrassed to actively say what I wanted to do, but I knew she knew already.
'I want us to go for it,' I said plainly. She nodded and smiled.