The first chapter of Best of Both Worlds told how I got to know my shy blonde classmate Robyn, and discovered to my delight that she had a fully functional little cock, and described how we spent our first night together. So, maybe read that first.nnI thought this would be a single-episode story, and much appreciate the reader who said s/he got off on it so much that s/he was looking forward to the sequel; and that got me thinking.nnRobyn and I immediately began to spend as much time as we could together, both of us amazed to find a lover who fulfilled our most private erotic imaginings and fantasies. I'd like to tell you how our sex life together developed.nnWhen we were together in the evening, Robyn liked to wear a loose skirt, and began to tease me as we talked by raising a knee and giving me a glimpse of her panties. The panties she always wore were plain and straightforward and quite tight, either simple white briefs or boy shorts, but in both cases panties that could hold her little cock in, and avoid any tell-tale bulge when she was wearing jeans. In the evenings she generally wore the simple white briefs, and soon realised how immediately I responded to these quick flashes; she would smile, and then give me a slightly longer look, before tucking her knees demurely down again beneath her skirt. But of course she was inviting me to look at her and respond to her, and she began to leave one knee raised as she talked, with her hands casually wrapped round it, but showing me the whole swathe of white cotton that covered her cock.nnThe first time she stayed sitting like this, we just went on talking; she was clearly amused that she could see how distracting her panty-play was, before we went off to bed and fucked each other silly. But the next evening I moved beside her on the sofa when she flashed her panties, and began to stroke her thighs, before reaching further to that band of cotton, gently feeling round the shape of her little cock and balls through the material, and thrilled to feel her tense and stiffen between my fingers. Soon her cock was hard and upright in her panties, and I went on tickling and softly stroking it through the white cotton, teasing her by touching her so gently, but also beginning to set up a steady rhythm with my hand as she pressed against me. And soon I felt that familiar tell-tale extra stiffening as she pressed her rigid little shaft against my hand, and she gasped as she spurted into her panties, with a delicious wet stain spreading out across the white cotton. I leaned forward and kissed the tip through the fabric as she finished coming, and sucked some of the sweet cum out of the cotton, before pulling the panties aside and gently licking the final drops from around her tip and her soft foreskin.nnA few days later, we were sitting as usual after supper, and Robyn was smiling at me in a way that suggested that she had another surprise for me; and when she raised her knee I saw what it was. Instead of her usual demure panties, she was wearing a pair of loose, lacy French knickers -- the sort of knickers she could never wear in daytime because they would not hold her penis in place. The material was partly see-through, and I could clearly see the outline of her cock, and one of her little hairless balls was just showing, pressed sideways by the lacy edges of the knickers. Just showing herself to me like this was clearly exciting her, as her cock was pressing out against the material before I began to touch her. My first instinct was to plunge my face down on the lace and suck her through it, but I held back, but decided to do it all with my mouth and tongue. So, I pulled her thighs wide apart and knelt down between her knees, very softly kissing and licking the inside of her thighs as I watched her cock stiffen in the lacy panties.