A few months later and everything had changed. The incredible threesome I'd had with my girlfriend Holly and her best friend Sarah had turned out not to be a drunken one off, and the three of us were now regularly hooking up for hot sex.
The morning after our first time together at a friend's house, we all raced off to Holly's place and proceeded to spend pretty much the entire weekend in bed fucking. And we had barely stopped since.
Whilst Holly and I were supposedly still a couple, it felt much more like there were three of us in the relationship, given how much time we spent together. Even when I went out with Holly on a date, we often ended up booty calling Sarah on our way home, and she was only too happy to oblige. The only condition of our arrangement was that we all kept it to ourselves, and I had somehow managed to avoid bragging about it to my friends.
The sex itself was just as amazing as it had been the first time, and I knew I would never grow bored of fucking both Holly and Sarah, and watching them enjoy each other.
I loved them both in different ways. Holly was probably the more facially attractive of the two of them, but Sarah had a killer body; and while Sarah gave the best head, nothing could beat the feeling of putting my cock into Holly's tight pussy and fucking her hard.
There was little doubt in my mind that Sarah was bisexual. We never really discussed sexuality, but I could tell that she was equally happy feasting on her friend's pussy as she was taking my cock. In truth, she seemed besotted with Holly and would do anything to satisfy her.
With Holly, it was less clear. Whilst she clearly loved getting pleasured by Sarah, she rarely reciprocated and seemed unwilling to embrace fully the opportunity to pleasure her friend in return. Indeed, she had only eaten Sarah out on a couple of very drunk occasions, and instead preferred to focus her attention on me.
What the technical name for our relationship was, I don't know, but Holly was certainly the one calling the shots, and Sarah and I knew it. Virtually all of our liaisons would involve me fucking Sarah at some point, but this was always preceded by at the very least a consenting nod from Holly. I had always had the impression that she wasn't entirely comfortable with me and Sarah having sex, but it was obvious that jealousy was a huge turn on for her.
This meant that the unspoken rule of our ménage a trois was that I couldn't fuck Sarah without Holly being present. This had led to several slightly awkward moments as Sarah and I waited for Holly to arrive at one or other of our houses. We clearly wanted to fuck each other and knew we would be fucking each other soon, but felt Holly's attitude meant it was off limits until she arrived.
That all changed one evening in March.
I had long since lost track of the number of threesomes we'd had together as I made my way to Sarah's house that Saturday evening for one of our regular rendezvouses, and I was as excited as ever to get down to it with them both again.
As was often the case, I arrived slightly early and Sarah poured us a glass of wine each whilst we waited with great anticipation for Holly to arrive. She was out for a drink with some friends and would be coming direct to Sarah's from the centre of town.
After a few minutes of making awkward small talk, Sarah and I were interrupted by the familiar ping from our phones - Holly had texted us to let us know that the bus she was on had broken down and she was stranded and trying to make alternative arrangements to get to us, though didn't know how long she'd be. My car was being repaired and Sarah didn't drive so there was little we could do to help her.
I was incredibly frustrated. It had been nearly two weeks since I'd last hooked up with Holly and Sarah, and I'd spent all day looking forward to our evening encounter. Knowing that I would have to wait even longer was not a happy thought.
Sarah wasn't helping. One of the things I liked most about her was the way she always went to an effort to dress up and look good for our sex sessions. And she really did look good that night, with her long brown hair neatly brushed, and her tight red dress which stopped well above her knees. Without a doubt, sitting there just looking at Sarah until Holly finally arrived wasn't going to be easy for me.
Sarah seemed frustrated too. For all that she was much shier than Holly, she was starting to come out of her shell a lot more in the bedroom, and I could tell that she loved the release that came from fucking us both. As she read Holly's message, she shifted uncomfortably on the couch and shot me a concerned glance.
We topped up our glasses and continued talking, sitting next to each other. Half an hour or so went by - still no news from Holly. When we finally heard from her again, it was a short message saying her phone was about to die but she'd get to us as soon as possible.
After another half an hour, my frustration grew even more. I looked over at Sarah as she took another sip of her drink - she looked really hot and I wanted nothing more than to feel her body against mine. It seemed ridiculous that I would almost certainly end up fucking her soon but wasn't allowed to yet, and all because Holly had to be there.
My irritation mounted as I looked at Sarah more intently, not really listening as she talked about other friends of ours.
But when she mentioned our mutual friend Chelsey, something inside me switched and I decided it was time to have some fun.
Chelsey - a pretty blonde - was a close friend of Sarah's and more like an acquaintance of mine, but it was at Chelsey's birthday party eighteen months earlier that Sarah and I had first met and hooked up in a very memorable sexual encounter that culminated in me fucking her up the arse in a storeroom. Unbeknownst to Sarah, I had caught up with Chelsey a couple of months later and given her the same treatment.
As Sarah spoke innocently about Chelsey's new boyfriend, my mind flashed back to those two amazing experiences and I felt my cock stirring in my trousers. Whilst Sarah and I had yet to have a repeat our anal experience - largely because of our pact to keep it a secret from Holly - I knew it still turned her on, and I often brought her to orgasm during sex by touching her arsehole when Holly's wasn't looking. But despite this, we hadn't discussed it since the very beginning of mine and Holly's relationship. I decided it was time for that to change.
"Wonder if Chelsey will have a birthday party this year," I said faux-innocently when Sarah paused for another drink.
Sarah looked surprised at first and blushed slightly, but then just shrugged her shoulders. She knew what I was trying to do but wasn't taking the bait. I tried again, more directly this time.
"Do you ever think about that time at her party then?" I asked.
Sarah blushed again, but this time looked back at me and answered properly.
"Of course I do. Still don't know how it all happened. I just really, really wanted to have sex."
"And the anal?" I probed. "It was your suggestion."
"I know," she said, almost whispering. "I guess I just got swept up in the naughtiness of it all."
"Have you done it since?" I asked gently, determined to keep Sarah's mind where I wanted it.
"No, just that one time," she replied almost wistfully. "Have you?"
I smiled, which elicited a wide-eyed glance from Sarah.
"With Holly?" she asked.
"No, not with Holly," I said pointedly.
Sarah looked surprised but didn't say anything, though she evidently wanted to hear more.
