A couple of months later

A good while passes since Carrie made her promise and as unbelievable as it might seem, both of you forget about it. Neither you or her have brought up her suggestion since then and your life together just continues as normal as if nothing had ever happened.

The two of you grow even closer. She introduces you to her parents and you do the same with yours. Her sister comes around and strays for a while before heading off for college, and you move in together after telling her that you love her. Carrie said the same back to you with her puppy dog eyes filled with joy. It's pretty much relationship bliss between the two of you.

But...

At work as you type away, working on a spreadsheet with numbers that numb your mind and bore you to ****, your phone sets to buzz yet again. You check it and to no ones surprise, Carrie is calling you for the fifteenth time today. You pick it up, knowing just how upset and worried she'll be if you don't.

"Hello." You answer, too exhausted for pleasantries.

"Hi babe, just checking up on you. Is everything going well at work? I've made dinner for you when you get back. It's your favourite. Are you getting off soon?"

There's a bit of anxiety in her voice like she's trying to rush you back home. But you don't really feel like it. In fact, despite having such a gorgeous girlfriend waiting for you who was willing to have sex anytime you wanted, you've recently been spending more and more time at work.

And as you continue talking to Carrie on the phone, the reason why work had been so rewarding, walks into your office, quietly shutting the door after stepping in when she sees you hold a finger to your lips.

Jill nods her head and smiles at you, telling you that she understands. The breathtaking blonde interm waits patiently at the door but can't help but tease you a bit by stripping. She unbuttons her silk blouse, revealing the black lace bra that she's wearing just for you. And when she takes that off, her amazing breasts slide out, presented to you in all their wonder.

"Hello? Are still there babe? Hello?"

Jill then removes her skirt, pulling it down whilst bending over so you can give her teasing ass a good spanking. The palm of your hand whacks her firm rear. As you do so, her bubble butt bounces for you while she lets out a soft moan, loving the way it feels when you spank her.

She then slides off her matching black thong and throws it at you for you to catch. Her little giggle when you sniff them tells you exactly how not innocent the young girl is. She flicks her long blonde hair at then straddles you, striding herself across your chair. Her wet cunt is sensational.

"So who's the better fuck? Your girlfriend or me?" Jill ask whilst she slowly grinds herself on your cock, her fingernails digging into your back from the other side of your shirt.

"Carrie has nothing on you babe."

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From the other side of the phone call, Carrie squeezes her mobile so tightly within her hand that it hurts. The hard plastic of the device bites into her palm and fingers and yet she's too numb to feel it.

Every now and again, she blinks. Her eyelids flutter open and shut, and she stares out lost into space. It...everything just feels so cold. Her stupid smile hasn't even had a chance to fade away yet. She just stands there, keeping hold of her phone as she tortures herself by listening.

"Carrie has nothing on you babe."

She squeals a high pitched cry. Her eyes quickly drown in tears and she can feel herself collapsing. Her legs instantly lose all strength and become like useless jelly. She falls down to the carpet, her phone dropping out of grasp and bouncing off the carpeted floor.

He couldn't be doing that to her. He...not him. It had to someone else. Another man must have...must have stolen his phone. She must have accidentally called someone else. It...she must have just imagined it. He wouldn't cheat on her.

Why would he? If he wanted to have threesome then all he would have needed to do was ask, so there was no way that he would cheat on her.

All those late nights when he was working late was just because he really cared about his job. All the times she caught him lying about where he was going and where he had been, that was just because he was having a beer or two with his friends.

Yeah that's it. He wouldn't cheat on her. He had said that he loved her and she knew that he had meant it.

Carrie tried to pick herself back up she couldn't. She tried to bring that foolish smile back to her face but her lips wouldn't stop quivering. She was shaking all over when the sound of two lovers groaning came from her phone.

"Jill." She heard her boyfriend say as he moaned whilst simultaneously stabbing her in the heart. That knife was then slowly twisted, making her soul bleed out.

No longer being able to hold it in, Carrie began to sob, weeping loudly as she cries her eyes out.