I went into town for lunch and to get my boyfriend some new clothes.

While in a department store, a young girl who worked in the shop came up and helped us. She was very attentive and kept popping back to my boyfriend’s changing cubicle to make sure he had the right size. In fact she was so attentive, that we decided to put on a little show for her.

She kept peeping through the crack in the curtain of the cubicle. When we knew she was coming back, he took out his smartphone and put it in video camera and started recordin me.
I dropped to my knees, got his cock out and gave him a long, slow blow-job. I could see her there, watching us and it was a very horny experience.
He turned so that when filming me we could also see her face peeping through the curtain.
She watched us for a good 8-10 minutes before I finally let him cum right in my mouth. He was so hot from being watched and the risk of egtting caught that he splashed a bit on my cheeks and chin too.

Then as I got up, she scurried away. She came back a few minutes later and we all acted as if nothing had happened.

We often watch it back to see her turned on face and laugh at how fun it was.