Summer 2012 — FBI agents determined that the e-mail trail led to Broadwell. They came across a private Gmail account using a name that belonged to Petraeus. E-mails between Petraeus and Broadwell led agents to believe the two were having an affair. FBI Director Robert Mueller was notified. At some point during the investigation, the FBI interviewed Petraeus and Broadwell.
July 2012 — The affair between Petraeus and Broadwell ended, according to Petraeus’s friend Boylan.
Pictured: Robert Mueller, left, with Director of National Intelligence James Clapper, center, and Petraeus as they testified before a Senate (Select) Intelligence hearing on “World Wide Threats” on Capitol Hill in Washington on Jan. 31, 2012.