Shy step sister gets turned on while trying on my lingerie

I caught my step sister rummaging through my underwear drawer. She quickly hid the lingerie when she heard me coming. I teased her about it, and she got all flustered. I told her to try it on, and she reluctantly obliged. Watching her in my underwear was a sight to behold. She looked so sexy, and I couldn't help but get turned on. I pulled her close and started feeling her up, and she didn't seem to mind. I unzipped my pants and made her touch my hard cock. She was hesitant at first, but then she started stroking it. I bent her over and started fucking her from behind. She moaned loudly as I pounded her. I could tell she was enjoying it. After a few positions, she gave me a blowjob. It was clear she was enjoying it as much as I was.