My Step Sister Kendra's Boyfriend keeps blowing her off , so I had to “Step” in

So yesterday on my day off and as I was trying Study for my Exams I have this week , My Step-Sister Kendra busted into my room complaining about her boyfriend and how he just blew her off on their plans for the day . She was half naked and you could just tell she was in need of some good dick . She Reminded me that we weren’t “ Really related” but rather by marriage of our parents… so in her words it would be ok to fuck her!!!!! …. You aren’t going to hear me complain ! …. Besides she told me she caught me coming out of the shower and noticed my big dick ….. it must have turned her on , because she immediately dropped to her knees and put it in her mouth . I cannot believe how tight her pussy was also …. She is such a little slut too …. She had me cum in her mouth and she SWALLOWED every Drop ……. I can get used to living here =)