Her explosive memoir about life as President Hollande’s partner (and then, suddenly, ex) has caused a sensation in France. Here Valérie Trierweiler talks about being ‘betrayed and humiliated’ by the president, her supposed suicide attempt, and why the first lady comes last in French politicsOnly four people knew that Valérie Trierweiler, the former first lady of France, was writing a memoir: her literary agent, two employees from the publishing house and Trierweiler herself.