The Rose Garden of Downing Street rarely sees such amicable proceedings. In what could be described as a cross between a Richard Curtis film and the end of Blind Date when the couple come back for a chat, Cameron and Clegg laughed and joked their way through a rather painful show of affection. One day they will probably look back and regret such an OTT performance. Some terms of their agreement have just been released. The real extent of the horse-trading will have to wait to be dripped out when the going gets tough.