Patrick Clancy was spotted in Manhattan with his new wife, Rachel Danis, on Thursday evening.
The sighting came while his ex-wife Lindsay Clancy's murder trial was on a break.
An eyewitness said the couple spent about 30 minutes at an apartment, appearing visibly stressed.
Patrick was seen pacing and taking phone calls, while Rachel remained mostly on the couch.
Trial Background
Lindsay faces three counts of first-degree murder in the deaths of their children Cora, Dawson, and Callan in January 2023.
She has pleaded not guilty but acknowledges killing the children.
Her defense argues she was not criminally responsible due to severe postpartum psychosis and other mental-health issues.
Patrick has testified, describing the discovery of his children and his 911 call.
The trial has highlighted Lindsay's mental-health struggles and the efforts of relatives and medical professionals to help her.
As the defense presents its case, Patrick appears to be moving forward with his life away from the courtroom.