My stepsister's surprise request leads to a deepthroat blowjob

I was up early, heading to my girlfriend's place for some morning action when my stepsister decided to make a surprise entrance. She caught me in the hallway, dressed only in my boxers, and dropped a bombshell. She had been craving some cock all night and wanted a taste of mine. Initially, I was taken aback, but the thought of her on her knees, sucking me off was too enticing to resist. I let her in, and after a quick shower, she was ready to get down and dirty. She took me into the living room, bent me over, and went to work on my throbbing member with her tongue. After a thorough oral exploration, she mounted me, riding me like a pro. The sight of her bouncing on top of me was enough to send me over the edge, and soon, I was filling her mouth with my hot load.