After our recent experiences with new friends Steve and Sarah, our relationship had flourished and expanded in ways we didn't think were possible.
From watching my partner, Mei being fucked by her masseur, through to Mei being the centre of attention for a group fuck, our sex life was now an ever expanding exploration of fantasies and desires.
Emboldened by the new world opening up to us, we decided to join one of the more popular adult websites, to see what like minded couples and singles were in our area.
With the need to be discreet, in terms of our social circle and professional careers, we spent some time adjusting to the multiple requests, emails and invitations.
Most were politely declined, though some online connections were made, the anonymity of the internet providing some privacy to explore and find our comfort point.
Logging on one evening, while enjoying a glass of wine, one message caught my eye instantly.
'Frank' was a businessman travelling from the US, who was scheduled to be in town next week for a night.
His email was polite and considerate, while highlighting both his discretion and experience with couples.
Frank certainly ticked a lot of the boxes for me, and his imposing muscular build, and thick well hung cock would also appeal to Mei, no doubt about it.
I replied to Frank, and mentioned I would discuss with Mei, and see if there was a chance to meet up the following week.
Over dinner with Mei, I mentioned the message from Frank, and showing her his photos, we quickly agreed that we should explore the options.
Mei hadn't reached the stage where she was comfortable fucking other men in front of me (or watching me fuck other women) so instead of Frank's suggestion of an mmf session at his hotel, I replied that Mei would drop by his hotel room, if he was agreeable.
Attaching some discreet photos of Mei in her bikini, showing off her petite yet slender Asian body and sizeable breasts, I wasn't surprised when Frank replied the following day that he would love Mei to stop by.
We fixed a time and I asked Frank to give me a quick call on the day, once he was settled into the hotel.
The days quickly passed and it wasn't long before my mobile was buzzing away.
Answering the phone, Frank let me know he was in town, and settled into the hotel.
He gave me the room number, and I let him know to expect Mei around 8pm that evening.
Just before we ended the call, Frank asked if I had any special requests, and after a moments thought, I let him know that I would love to listen in, via phone call, to the encounter.
Frank readily agreed and we ended the call.
After dinner Mei took the time to shower and get dressed for the evening.
Watching her put on her lingerie and stockings, I took great delight in admiring her beautiful body.
Her waxed, bare pussy looking as enticing as always, her firm breasts with pert nipples just begging to be licked, sucked and pulled on.
I resisted the urge to bend her over the bathroom counter, and waited for her to finish getting dressed.
Putting on a short black dress that stopped a few centimetres below her panties, the top of her stockings clearly visible, and finishing it off with a pair of red heels, Mei was a picture of seduction.
Pure, lust filled seduction.
Just as she left to go in a taxi, I let her know that Frank would call me once she arrived, and I was going to listen in on the evening.
The instant sparkle in her eyes was enough to know that she loved the idea, and that I was going to be in for a show tonight.
I settled into the couch with a nice bottle of red wine, the room lights dimmed and the air conditioning providing a nice chill to the air.
Not long after my phone buzzed, with a WhatsApp voice call.
Recognising the number as Frank's I answered the call, and my ear phones in, Frank let me know that Mei was on her way up.
Moments later the distinctive chime of the room doorbell could be heard in the background.
Frank placed the phone down and I could hear him walk away, followed by some conversation, a door closing and voices becoming more distinct.
Frank was complimenting Mei on her outfit, and how gorgeous she looked.
The happy response from Mei, followed by a small nervous laugh, was enough to let me know Mei was enjoying the attention.
Frank had picked the phone up, and placing it down again I was able to hear more clearly (later I would learn that the phone had been shifted to a bedside table).
After some small talk the room suddenly went quiet, until the soft murmurs and sound of people making out were clearly audible.
A brief pause, followed by the distinct sound of a zip being undone, and the clicking of heels on the hard floor, indicated Mei's black dress was now removed, and she was standing in front of Frank, in her lingerie and heels.
Frank was clearly impressed by what he saw, complimenting Mei not only on her amazing physique, but also her choice of lingerie, which went perfectly with her stocking and heels.
Then Frank asked Mei to get down on her knees, and more ruffled sounds indicated Frank had removed his shirt and pants.
Frank mentioned he was going to sit on the bed (clearly for my benefit) and he invited Mei to start sucking his cock.
Near silence again greeted me as I listened in.
The next sound was the sound of Mei sucking Frank's cock.
The slurping sound, followed by the occasional pop as Mei broke her lips away from Frank's cock head, was interspersed with some soft words from Frank and plenty of encouragement.
Mei was clearly relishing the encouraging words of Frank and she would occasionally moan in recognition of Frank's encouragement.
I topped up my wine glass and leaned back in to the sofa.
Loving the audio, my mind was flooding with erotic imagery, as I listened intently to my beautiful girlfriend sucking off a near stranger.
Frank was certainly very verbal, both in his compliments and instructions, and the muffled acknowledgments from Mei added another layer to the listening experience.
