You

Without thinking you slip your shorts down over your hips, your cock springing free. Kate moans and she drags her eyes from the man who has now edged closer for a better view, and looks as you kneel between her feet. You part her knees and expose her pussy, her fingers have worked the lips into puffy red protrusions.

'Fuck me,' she whispers. You slide forward, guiding your cock towards her beckoning pussy, slipping the swollen head into her. You both gasp, then you are deep inside her, marvelling at how wet she is. It is obvious that this public display is turning her on as much as it is you.

A shadow falls across Kate and her eyes widen as she looks over your shoulder. Without stopping your thrusting you look back and see the young man who was watching earlier, standing only a couple of feet away.

'Can I join you?' he asks.