Having "The Talk"

As you peer into the room you see Allison standing over by Fiona’s bed with your sister behind her, it looks as if she had just walked up behind your girlfriend and pulled her in close with her arms wrapped around her. Their words weren’t the loudest but you could make out the jist of what they were saying.

“So, are you going to tie me up and blindfold me again for him this time?”Allison cooed as she leaned back against Fiona. “I even wore the outfit you said he’d like”

You feel a twinge of jealousy knowing that she wore that outfit for someone else...specifically your sister, though you should have known that anyway, she was still YOUR girlfriend.

Fiona slowly shook her head while pressing in behind her, leaning in closer to speak directly into Allison’s ear. “You wore that outfit for me, because I like it, my little slut”

Allison shivers a little as she felt the hot breath tickling against the skin of her ear and neck, trying to look back at your sister, this embrace had gone on much longer than she had anticipated. “You’ve been...teasing me all night like this...wasn’t it just so he can join us now?” Allison spoke out in a ragged tone.

“He’s already here, just not in the way you were expecting, he’s always been here” Your sister breathed the words into your girlfriend’s ear as she pressed her pelvis in closer to the girl’s mini-skirt covered rear, no doubt being able to feel the warm bulge within your sister’s pants. “You didn’t think there was a reason your body has been so accepting of my touch?”

Allison was frozen still, she felt a warm solid mass pressing up against her from behind, she knows what it felt like but...could it really be? She couldn’t speak, her face the deepest red you’d ever seen, she stammered out a few sounds but nothing comprehensible.

You had considered moving in to interrupt things and perhaps defuse the situation but before you could move your sister had your girlfriend falling back onto the bed and was straddling her stomach. Before Allison could protest Fiona had opened up her bottoms and fished out her ‘anaconda’, flopping it out in front of her, only semi-erect but already giving your girlfriend war time flashbacks to just days ago.

“C’mon, don’t you want to finally give a kiss to the cock you’ve fallen in love with? You’ve been begging me for more pics of it for days~” Fiona teased as her hand wrapped around the underside of her own shaft near the base, slowly stroking herself, causing it to slightly bob back and forth in front of your girlfriend’s eyes.

Allison for a moment looked conflicted, eyes flicking back and forth from Fiona’s face to the cock bobbing in front of her. “But I thought you just knew him….you’re Jesse’s sister…” Allison mumbled out nervously.

At that moment you thought there would be a chance that maybe Allison would reject this, that it would be too much for her, and perhaps all of this would have a chance to return to normal. A small smile cracked across your lips at the fleeting thought of that until it quickly faded at the sight of your girlfriend leaning in close to press her sultry lips up against the bulbous tip of your sister’s massive cock.

Fiona let out a long content sigh, finally feelings those soft warm lips, an instant sign that she had won….again. Allison kept her lips pressed in close, slowly spreading them around the thickness of the tip, taking her time as she’d never had to deal with something as thick as your sister. Though Fiona was having none of that, reaching down to place a hand on the back of her head and grip your girlfriend’s hair in a tight fist, shoving her hips forward to sink further through those lips into the serenity that was Allison’s warm mouth.

“Mmm, fuck that’s good…” Fiona moaned out, and at that moment turned her gaze towards the door, locking eyes with you. You instantly froze up, unable to break eye contact with your sister who had the happiest little grin you’ve ever seen her sporting. She turned back away to look back down at Allison who was eagerly nursing at the first four inches of her shaft. “Even better than I thought you’d be, you’re definitely too good for my brother~”

You were too frozen in shock to do anything at that moment, unable to believe that Allison was so accepting of the situation, did she really like your sister’s cock enough to accept such an insane situation?

Fiona kept her focus on your girlfriend, though stealing glances over at you every once in a while to remind you that Allison belonged to her now. Keeping a tight grip on her hair your sister would continue to buck her hips towards those lovely lips of your girlfriend, feeling each of those thick veins that covered her shaft bump over them as she sunk even more deeply inside.

Allison had taken just about half of your sister before she began to really struggle, you could hear her loudly gagging, the wet lewd noises your girlfriend was making echoing across the room and through your ears. Though despite the struggle there was no motions coming from Allison to suggest that she was anything but fully compliant.