updated 01/05/2012 AT 6:55 AM ET
•originally published 01/04/2012 AT 6:55 PM ET
Dr. William Petit Jr., the lone survivor of a brutal home invasion that took the lives of his wife and two daughters in 2007, is engaged to photographer Christine Paluf.
The couple met while Paluf, 34, was photographing events for the Petit Family Foundation. They became engaged after Christmas but have not set a wedding date, Petit’s spokesman Rick Healey tells PEOPLE.
Petit, 55, has sat through the separate trials of two men accused of killing his wife, Jennifer Hawke-Petit, 48, and his two daughters, Hayley, 17, and Michaela, 11.