My stepsister invites me to pleasure her with my tongue

I was walking up to our house when my stepsister invited me to come over and play a little game. She's always been kind of hot, but I've never really been attracted to her. I mean, she's still a teen, but she's got a nice body and some cool tattoos. Anyway, she wanted me to pleasure her with my tongue. I was kind of surprised, but I figured, why not? She's always been pretty adventurous. So I started off with some gentle fingering, getting her nice and wet. Then I moved on to some serious muff diving, licking her out nice and slow. I think she might have even moaned a little bit. Then, to really push things to the next level, I started fingering her even harder. And sure enough, she ended up coming all over my face. It was kind of weird, but also kind of hot. Not bad for a first time.