Former Prime Minister Petr Nečas has now acknowledged he had a relationship with his closest aide, whose arrest for suspected illegal spying and graft led to the government’s fall last month, a daily reported on Saturday. The aide, Jana Nagyová, is among a group of people who have been charged with illegal surveillance of Nečas’s wife, whom he is now divorcing, or with bribing parliamentary deputies who had rebelled against Nečas last year.