Well I had this neighbour when I was around 13.. and I had just started 'discovering' myself... if you know what I mean. My neighbour was exactly the same age as me (minus about 6 days) and extremely attractive.
His family was holding a get-together with the whole street to introduce us to the neighbourhood. I decided I would do my best to impress him by wearing a skimpy top, skimpy shorts and tight leggings, and boy he was impressed.
When I walked in, I waved to him and he turned BRIGHT RED.. I was secretly pleased. All the kids were shoved out the back in the spare room. There were only babies, five year olds and one awkward nine year old there apart from us, so we were getting pretty bored watching kiddie movies. Matt decided to give me a tour of his enormous house... and of course this lead into him taking me into his bedroom.
I sat down on his bed... laughing at him showing me his old football trophies. I laid down and the next thing I knew he was right next to me. I had medium sized boobs, and he was staring right at them. I laughed, rolled over and kissed him awkwardly. He then started to kiss me passionately back and it started getting pretty heavy. In the space of about five minutes, we were both naked and he had pulled out a condom.
I had to pull away, after all we were only 13. We instead began to jack and jill each other like crazy. After around an hour we thought we should stop and go downstairs.
I am still with Matt to this day... though things are WAY more extreme!