My Step Daughter

My wife and I have a really good marriage and a great sex life, but we do have one big problem that I resent the shit out of.
Her daughter is 23 and hot as fuck, but also spoiled as shit and the wife gives her anything she wants. She'll ditch me in a second if her grown ass daughter whines and needs attention, so I get stuck out in the cold whenever she needs babying.
They were off on a girls weekend last month and I happily stayed home to do my thing. Her daughter had crashed her laptop just before they left, so I got to play with it to see if I could get in. I was able to boot in and see the files, and downloaded all her naked selfies and personal pics. Then I undid what I did and put it back like it was never touched.
One of the things I found was a night vision fuck vid she made with her boyfriend on my old sony cam. The green tinted stuff.
My wife likes to watch porn when we fuck, and I edited her daughter's fuck video so she wouldn't be recognized. I uploaded it to a porn site, and as soon as they got back, I couldn't wait to fuck my wife.

My spoiled ass step daughter has no clue her sex video is out there on the internet, and her mom doesn't know how hard she came from watching her little girl get fucked like a whore while I pounded my cock into her c**t.