A Virginia man on trial for killing his wife and another man took the stand in his own defense on Thursday, January 29, and told jurors he loved his wife and was happy in his marriage, even though he was having an affair with his family's au pair. Brendan Banfield, 40, took to the witness stand in a Fairfax courtroom and admitted he started cheating on his late wife, Christine Banfield, who was 37 when she was murdered in February 2023. But he went on to describe his love affair with Brazilian au pair Juliana Peres Magalhães, now 25, as casual.