Stealing sister blackmailed into a footjob

Description: My girl best friend's sister, who we'll call ebony, was stealing shoes out of her closet. ebony did this before and they had a big argument about it, because ebony doesn't wear socks and always stinks up any pair of shoes she wears.  so on this day when i caught ebony stealing my best friends shoes, i threatened to tell on her. she begged me not to say anything since she didn't want to get into another fight with her sister. she offered to pay me to keep quiet. i told her "i don't want your cash, i want your feet!" at 1st she thought i was a disgusting weirdo for being attracted to her sweaty stinky feet. but after threatening to tell she caved in. in order not to get caught, we go under the covers and pretend to be on our phones. i start rubbing on her feet while they are in my lap, and she feels my boner. i pull my dick out and start rubbing it all over her soles. she gasps and says "what are you doing!?!?!" and i say "it's not that bad, yo feet just got me hard". she reluctantly gives me an oily reverse footjob and i bust a fat nut all over her soles and in between her toes. this secret will stay between us!