I can't believe we got away with messing around in the gym! Anyone could have seen us, and most of the regulars here know she's my step-sister.. Among the other gym goers, step-sis and I are having are own little session off in the corner.

You look so good already step-sis, I think we can skip today's workout

Or we can work each other out..

People walk by us and don't even notice my hand is completely down my step-sister's shorts.. This is getting kind of risky, and I don't want to lose my membership! We sneak off into the bathroom where we can have some real fu... Show more