Teen stepsis seeks guidance from stepbrother on sexual matters - my step sister

My step sister has always been a bit of a mystery to me. She's cute, with small tits and a smile that could light up the room, but there's something about her that's just a little off. Maybe it's the way she looks at me, or the way she seems to be always hiding something. I've always been a bit worried about her, especially when she goes off to college. I mean, she's just a teen girl, right? But when she comes back home from college, she's not the same girl anymore. She's more mature, more confident, and more interested in sex than ever before. So, I decided to give her some advice on how to handle things. I mean, she's my step sister, but she's not really my sister, right? So, we started out with some basic stuff, like how to give a blowjob. But then things got a bit more intense. We moved on to hardcore stuff, like riding me doggy style and cowgirl. It was pretty hot, I have to admit.