Wait for her to finish and see what she does.

I decide to play it on the cautious side. I'm still not sure if she indeed gave me a show on purpose or not. I could just be seeing what I want to see. I stare at that tight ass as she slowly pulls her jogging shorts over it. Feeling my cock straining in my pants, god how I'd love to just slap that ass while I slide my cock into her wet pussy from behind.

As she finishes I quickly duck back, shit what now? I'll just umm, be walking down the hall, yeah yeah that could work. I walk back down the hall a dozen feet and then turn and intend to walk by her room, then maybe a 'oh there's someone' kinda moment.

I reach her doorway and slam she runs right into me, we collide with such **** she we are both thrown off balance. Instinctively I grab her hips to keep her from stumbling backwards and pull her towards me.

"Oh! Shit! Hi!" she looks up at me with wide eyed surprise.

"Shit sorry I didn't see you there" I stammer for something to say. Then as I look down at her I notice first her small but cute tits pressed together from her arms being pushed in when I grabbed her. Then second I notice that her hands are pushed together right at my crotch level and I'm fairly sure those are her fingers touching my hard throbbing cock. I am suddenly lost in that moment staring down at her cleavage feeling her delicate fingers trying to identify the hard object the have just come across. I feel her finger wrapping around my cock, she gives it a squeeze, then tries to back way from me.

"Sorry, sorry, just didn't want to knock you on your ti, um ass." I let go and move back away from her I feel her fingertips linger on my cock for just a moment as I back away. "Um yeah the maid let me in. I guess I'm your step brother? I got in this morning, dad said it was alright if I stayed here for a bit." Shoving my hands in my pockets to try and hide the obvious hard on.

"Yeah yeah I recognize you from the pictures. I'm Ashley, and your my new step-bro." I can't help but notice her hard nipples poking through her shirt. I watch as she looks me up and down I see her gaze linger at my crotch, "Your just in time to help me with my yoga, come in here." She fishes my hand out of my pocket and drags me into her room behind her. She stops in front of her dresser and says "we need to find you some shorts."

I stand there as she bends over and starts searching her drawers, her ass hovering just in front of my crotch. I see her rooting through her skimpy underwear and my thoughts start racing. I feel my cock getting harder and harder. She moves to the next drawer down pushing her ass closer to me "They are somewhere in here" she says as I can feel the heat of her pussy radiating towards my cock. She moves to the bottom drawer and she is now bent in half and her ass is pressing back into my throbbing cock. It takes everything I have to not just grab her and fuck her hard, as I can feel the warmth of her pussy on radiating on my cock. What makes it worse is her moving it slowly back and forth across my cock, I'm sure she's doing it on purpose. There's no way she doesn't know she's pressing her hot wet pussy against my throbbing cock.