"They aren't a couple, but they love and respect one another." While Abby has been unmarried for the most of NCIS, McGee began dating Delilah Fielding (Margo Harshman) from the Department of Defense near the conclusion of season 10. They married in Something Blue season 14 and had twins together. The family was then expanded with the addition of Delilah's sister Samantha (Kristin Lehman), who joined NCIS as a special agent. They also have a brother named Jack (Tate Donovan). Abby comes off as a strong woman who knows what she wants in life and goes after it with everything she has got. She doesn't let not being married stop her from having a good time with McGee and they seem to enjoy each other's company very much. In fact, they are so compatible that some people think they should be married themselves. Abby was born on January 4th, 1970 in Washington D.C. She is an anthropologist by trade and has worked for the Navy Criminal Investigative Service for almost 20 years. Before joining NCIS, she served for four years as a naval officer. She also has experience working with the FBI and the Naval Criminal Investigative Service. On October 1st, 1998, Abby was one of several agents sent to Somalia to investigate the death of a U.S. Marine. There she met Special Agent Leroy Jethro Gibbs, who was assigned to take charge of the investigation.