Slightly off topic, but there was a man on Radio 4 this morning who had been in orphanages as a child. He said that whenever children made friends with each other, one of them would be moved on, which sounds awful, so the children never settled anywhere. He had a friend when she was 9 and he was 7 and they got separated. Years later, when both had been married and either divorced or widowed, they met again accidentally and have been together ever since. Aaah.
Liz