He moves straight in

As soon as the lesson started, I went in for the kill. I leaned forwards slightly, slid my hand under the desk and straight onto her knee, then slowly raked my fingers up her inner thigh until she came tonher senses and clamped her legs shut. Fortunately, I was closer than in maths and actually had my little finger right against her hot pussy. Again I could feel the heat from it, this time with a little dampness too, and if I squeezed or moved my hand slightly, could hear her gasp slightly next to me.

After about ten minutes of this, her hand found it's way to my cock. I'd clearly turned her on enough that she didn't mess around with teasing either. Her gently squeezing and rubbing had pulled my foreskin back and the head of my cock was rubbing against my clothes. It felt amazing but I really didn't want to walk home in wet pants so turned slightly and said "ease off or I'll cum in my trousers" to Jess. Her response was a gasp and a long firm squeeze of my cock, before turning to me and asking if she could walk home with me after.

I noticed Beth watching, and as I caught her eye she flashed me a thumbs up. I was definitely in there.