Let her ride you

You reason that since Annamae wants to play cowgirl, you may as well let her ride you.
You tell her as much and she smiles and pushes you to the ground.
You're already half naked since you was masturbating, so she quickly jumps on top of you.

When she inserts you feel yourself pulse inside her and you know that you are very excited and won't last long, but as you look at her face you see her biting her own lips when she puts you inside her and feel how wet she is, and you know that she too is very excited. Both will cum soon.

You are half-wrong about that

As Annamae starts to bounce up and down on your cock, you realize that you're too excited to hold on for a reasonable time, even more so when she starts to use all of her tricks, shaking and moving her hips in interesting ways...

So you move to the offense and grab her breasts, squeezing and licking them, and kissing her deeply in the mouth. It kind of work and she starts to moan so loudly that you have to hold her mouth close with your hand, which excites her.

It doesn't seem to work and you start to think she will make you dry as she did to her own brother, but the intense rhythm is hard to keep up and suddenly Annamae is too tired and slows down. You see that as your chance and flips her over and start to pound her pussy, missionary style.

She screams, quivers and start to cum, and you cum with her.

Annamae tries to scream so loudly as she comes that you panic and **** a deep kiss, so she doesn't make too much noise. Even then you can still hear her muffed noises as she comes, trembling beneath you... it excites you so much you lose control of yourself, throbbing inside her.

When is over you kiss her gently and smile at her. She fucks like a wild thing and is a hell of a woman to handle both her own brother and you in the same night like that. You liked. You liked a lot. You tease her nipples and you two cuddle together.

You all rest for a few seconds, then she starts to put her own clothes back. Her brother gets closer than you both and all of you start to talk. They want you to promise to keep a secret about the whole **** thing, which you easily agree. There is no reason to refuse.

You all talk a little more, about they having an affair and about sex in general, but the duo is very aware that their parents will look for them if they disappear for too long, so soon enough you all must come back to the house.

You return to your room to sleep, happy and satisfied.