Run into Sara in the bathroom (alt)

I go up to the twins bathroom to change. The door is ajar but I don't hear anything so I swing the door open. Sara is standing there in just a pair of running shorts. Her small pert breasts are completely on display.

"Sorry, sorry." I say as I stare at her cute little pink nipples that are sticking out like little points from her breasts. My cock makes a tent in my shorts.

Sara slowly turns her head towards me, her eyes flicking down to my bulge that she recently had her fingers on, and smiles. "So you decided to help with the shirt after all?" She walks to me and takes my hand, raising it to her breast as her other hand goes to my shorts. She grins at my reaction as her fingers stroke my hardness.

I have trouble coming up with words. I stammer a few seconds, and then lean in to kiss her as I fondle her tit. She puts her free arm around my neck to hold us close, still jerking my crank.

After a minute of making out, tongues tangled, Sara breaks the kiss and says, "Mmmm, now we're kissing cousins." Then she lets go of my head and cock, stepping back from me. She proceeds to pull her sports bra on over her head. I stand there in awe as I watch the lift of her breasts as her arms are over her head, and her thin flat stomach as she pulls her clothes into place. Sara says, "Meet you downstairs," and proceeds to head downstairs.

After a few more stunned moments. I shake my head and get dressed.