I walked into the apartment and smiled as Tiffany was eagerly eating out Shelly’s pussy, the moans coming from Shelly betraying exactly how much she was actually enjoying Tiffany’s attention.

The three of us had been roommates since the second year of university, and were still sharing housing while we “found” our careers or in my case, what I wanted to do next.

And before you ask, no, Tiffany eating out Shelly wasn’t a typical Tuesday.

While Tiffany had always been, well, a slut for just about anyone, Shelly had been heterosexual since before she knew what that meant.

Shelly had been monogamous with her long term boyfriend since the day I’d met her, at least until last month when she’d caught him cheating on her. It had really hit her hard to find out he’d been doing so for years with men.

As good friends, Tiffany and I of course sympathized with her… and got black out drunk while bitching about her ex.

That’s when two things had come up. The first was that Shelly claimed she was now asexual, and the second was that she couldn’t understand how anyone could claim to be bi-sexual.

Now the first would have been fine, asexual is a perfectly fine orientation… except when Tiffany and I can hear you masturbating each night and you scream like a banshie when you cum. That really does make it hard to keep up the pretense of being asexual.

The second was just sour grapes of course, her ex had tried to say he was attracted to both men and women, and maybe he was, but both Tiffany and I had doubts long before his infidelities came to light. During that drunken night, Shelly had been convinced it was impossible, even when Tiffany had explained she’d slept with lots of women in the past, though far more guys and she didn’t identify as bi, but could easily see how someone could.

Shelly, in her drunken state, had been a little belligerent, nothing too bad, and we both let it go, at least until she insisted she couldn’t be wrong and I was incapable of proving otherwise.

That was a challenge I took serious and so I took her up on it.

I doubted she remembered the conversation quite honestly, but I did, and the last few weeks had been pumping subliminal messages through the stereo in the apartment, infected her phone with malware, and taken control of her laptop.

It was a good thing I had done my final research project on subliminal techniques and behaviour correction.

I slipped past the two women and into my room to get changed, quickly stripping down to my birthday suit before grabbing my housecoat.

Neither Tiffany nor Shelly wore such conservative housewear these days, the subliminal messages taking them into a more sexual style.

Tiffany had almost been too easy, she already wore outfits that exposed a lot of flesh in her every day life, let alone around the apartment. Shelly had taken longer, it was almost two weeks until she started walking around in just a long t-shirt, three before it was just a bra and panties, but by the fourth she often walked around with her tits out.

These days both wore skimpy little “outfits”, if you could call them that, which exposed their tits and pussies most of the time.

A cry from the living room brought my attention back to the moment, Shelly had obviously just cum, and so that was my cue to get moving. I make hasty work or the ten or twelve steps out of my room to the living room, to find Tiffany still gently licking Shelly’s pussy, but more gently, lovingly.

I sat down on the couch across from them, spread my legs just enough to expose my dick a little, then cleared my throat.

Tiffany stopped licking and looked over at me, hunger in her eyes when our gazes met, then her eyes drifted down to my semi-exposed dick and she licked her lips.

Shelly, here eyes still semi-glazed over from the post orgasmic bliss that Tiffany had brought her, smiled and let her head roll to the side to look over at me.

Tiffany was already crawling half way over to me when Shelly’s brain finally kicked back into gear and she let out a little gasp as her fingers reached down between her legs and rubbed her clit a little.

Tiffany made it over to me and crawled up onto the couch beside me, leaning in I could smell Shelly’s pussy juice still covering most of her face. She smiled, half turned to Shelly and then purred a little, “Want a taste of Shelly’s pussy?” then she reached down and spread my housecoat the rest of the way open before grabbing hold of my dick and kissing me on the lips.

I heard a little whimper come from the chair where Shelly was, then Tiffany broke the kiss and turned and looked directly at Shelly.

“Come on Shelly, don’t be shy, his dick isn’t going to get sucked by itself, I’ve got it all nice and hard for you…”

Shelly whimpered again, but slipped her feet onto the floor and stood up, swaying her hips and showing off her tits, she wiggled her ass over to me and then sunk down onto her knees, parted her lips, and let Tiffany guide my dick between them.

Shelly let out a low moan as she sucked me into her mouth and then started bobbing up and down my shaft. Tiffany then reached up and started playing with my nipples as she nuzzled into my neck for a moment before pulling back and looking me right in the eyes.

“You know she’s been talking about sucking your dick for days while I eat her out… I can’t believe how much of a little bi-slut you’ve made her.”

I raised an eyebrow and started to protest, “I… I don’t know…”

Tiffany gave my nipple a hard pinch and shook her head, “Don’t lie to me, I know what you’ve done. I don’t know how you did it, but I know you did. Shelly and I have been fucking like rabbits for at least a week and both of us have been trying to figure out how to get in your pants as well.”

I let out a grunt and then a smile, “And you don’t mind?”

“Fuck no. Shelly’s happier than she had been in years and I she eats pussy almost as well as I do.”

I reached up and pulled Tiffany back towards me, our lips and tongue’s mingling once more.

She broke it off after a moment with a giant smile, “Fuck… now tell me what I need to do to get your dick in my pussy before you fuck Shelly’s.”

I reached around and gave her ass a little slap before pulling Shelly off my dick and taking the three of us back to my bedroom where I was going to tell Tiffany exactly what she had to do.

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