'Oh yes, room for three.' Zara giggled.

We all scrambled impatiently onto the bed with Carol in the middle on her back and Zara and I either side of her propped up on one elbow. We hadn't planned that arrangement, it just seemed to happen. But then we seemed to come to a dead stop, each of us gazing at the others and hesitating to be the one to start things off.

'How far can we go?' Zara asked, her eyes registering her nervous excitement as they flitted from me to Carol and back.

'As far as you like.' I told her. 'No limits.'

Her eyes switched to Carol who...