I was just thinking that it was high time I wrote to a friend of mine in Germany, when this envelope popped through the letterbox yesterday morning. When I was 13, I took part in an school exchange scheme. I stayed with a family for three weeks, and luckily got on with my exchange partner, her three brothers and her parents. In fact, we got on so well, that we continued to visit each other for many years. And my parents visited her parents. And vice versa. A few years ago, I took my daughter to stay with the parents. We met up up with my exchange partner who has two kids. My daughter got on with her daughter. And now, my exchange partner’s mum and I keep in touch by letter, swopping news of our families every few months.