Almost as soon as she arrives home

You drive over to your Mother's place, the trip taking a good few hours but you make good time and Tiffany definitely helps pass the time by running a few ideas past you. With all of this taking place at your old home there were a few new complications, but you're Mom was still working so there should be some 'alone' time for Tiffany to bait a trap for Summer. Tiffany will tease and work your twin sister up, stopping just shy of fucking, saying if your sister wanted that she'd have to earn it. Once summer was hooked, Tiffany would dictate the terms of their illicit hook up, which if everything goes to plan would leave Summer at your Mercy.

It felt more than a little surreal to think that in a few days time you'd be fucking your own twin sister, just to get back at her for sleeping with most of your previous partners. Tiffany tried to make you feel better by saying that since you were twins its basically just a more complex and involved method of masturbation. Although what worries you isn't the legality of what you were doing, which was a fairly big problem, but rather how excited you were getting from the idea. Hell you were still partly hard when you were giving your Mother a big hug and introducing Tiffany.

You weren't sure how long you'd have to wait for Summer to make her move, although you got your answer of not long when she arrives a few hours after you and Tiffany. Summer had just finished giving Mom a big hug, when she rushes over and hugs Tiffany as well, then in front of you grabs and squeezes Tiffany's shapely rear while they hugged. Then an hour later you see the Summer slink off after Tiffany while you helped your Mother wash up after dinner.

"So how did you get on with my Sis?" You ask with weak smile.

"Well, I know she's good with her fingers and that you both go wild when I do that thing with my tongue," Tiffanty giggles back with a wicked grin.

"Good to know," You reply with a sigh, trying your best to fight down the pang of jealously slowly bubbling inside of you,"

"Although you'll be happy to know, I think your cum tastes better," Tiffany adds

"Lucky me," You reply shaking your head before laughing, "Your doing this on purpose to get me mad aren't you?" You ask

"Guilty," Tiffany giggles, "Make sure you fuck me nice and hard, so Summer hears what she's got to look forward to but you have to use a condom," Tiffany adds

"Why?" You ask

"Because if she thinks she'll get to fuck me bareback, while you're playing it safe, she'll let me do anything to her," Tiffany replies with a grin.

"Right," You nod before looking around before Tiffany pulls a box out of her bag and tosses them to you.

You quickly tear the foil square open, rolling the condoms over your big thick cock before your ravage Tiffany for a good hour, ensuring that Summer got an earful of Tiffany moaning and groaning in pleasure. All the while you imaged Summer getting hotter and hornier with each creak of your bed frame while Tiffany squirmed beneath you. The thoughts driving you wild and frantic, much to Tiffany's delight as she always wished you'd fuck her harder and rougher.

You were surprised the condom held up when you finally came, it along with TIffany had taken a bit of a beating, although Tiffany was smiling ear to ear as you roll off her. Tiffany sits up and gently slips the condom off your still twitching cock, the tip top heavy and obscenely ballooned with your thick potent cum.

"Oh wow Alice, good thing you wrapped up otherwise I'd be pregnant for sure with this much cum," Tiffany gasps out loud.

You were about to question why Tiffany was talking as loud as she was, but she holds a finger up to your lips and cups her ear to the wall to Summers bed room. You quickly follow suit and are rewarded by the sound of Summer's ragged breathing and a muffled groan as she cums.

"Nasty bitch was jerking off to the sounds of us," You whisper with a smile, your cock already swelling back to life.

"Sorry babe, you should save that energy, I think you'll be needing it tomorrow," Tiffany whispers back before kissing you on the lips.