My panty fetish wasn't left unnoticed. My step-sis caught me and 'gave me a hand'

My step-sister was furious when she rushed into my bedroom looking for her panties while I was panty-jerking with them. But her mood changed not long after she saw my cock. She decided to help me and gave me a handjob with her panties on my dick, and after that I fucked her pussy hard in pov doggystyle position to a big cumshot on her ass. She even thanked me at the end!