I looked at you in the bathroom mirror, your devilish smile fuelled my arousal as you ground your ass against my cock. I desperately tried to hold back from blowing my load too early. I had been dreaming of this moment for too long to let it end this quickly.

To distract myself, I focused on your face instead of your body, trying to ignore the perfect ass that I gripped in both hands as it bounced back and forth on my rock-hard shaft. I hadn't expected to end my day like this. Fucking my daughter's best friend as she leaned over the bathroom counter, but it was a welcome surprise.

You had been a part of my life almost as long as my daughter, quickly becoming her best friend when you moved to the neighbourhood and spending every moment around our house. I didn't mind since your parents were busy, and my wife and I were happy to help out. You became like a daughter to me, and I watched you grow into a beautiful young woman, never once imagining something like this could happen.

However, after your eighteenth birthday, something changed. You nagged me for days to create an Instagram account, and I caved, creating one with your help. Later that night, I received a follow request from you, and your account was full of images of you in skimpy outfits and micro bikinis. It changed the way I saw you, finally seeing the sexual young goddess you were.

Things changed quickly from there, and you started wearing outfits to my house that resembled the ones on your Instagram. Part of me felt like you were teasing me, relishing in the effect you had on me. I tried to resist my feelings and only occasionally stole a glance or two, turning to your online pictures when I found it too much to handle.

Today was one of those days. You and my daughter were sunbathing by the pool, and you seemed to be purposely stretching or changing positions whenever I came by. Your ass was always angled in my direction, and the pink thong left little to the imagination. I tried to ignore it, but when my wife left to see friends for the night, I couldn't take it any longer and excused myself to go upstairs.

Standing in the bathroom, I scrolled through your account, admiring your incredible body as I found my favourite picture of you. You sat on the poolside, your thin bikini barely covering your big ass, and you looked back over your shoulder with a beautiful smile and gorgeous eyes that almost encouraged me to do this. As I started to stroke myself to your picture, I realized the door wasn't shut all the way, and someone was looking through the gap...

Shaking myself from my thoughts, I came back to reality, listening to your moans. We didn't have much time before my wife would be home.

Hope you like this, sorry it got a bit long. I'm happy to discuss with you or jump right in! I'd love to see a reference for your character and maybe even my daughter too if you'd like her to join in later. My kinklist is here