I invite my stepsister to join me in watching porn (with an unexpected ending)

My stepsister, a stunning brunette with a tiny frame and a big Latina ass, loves watching porn with me. She eagerly joins me on the couch, eagerly anticipating the explicit content we\'re about to watch. As we indulge in our shared interests, things take a surprising turn as she surprises me with a mind-blowing blowjob.