McGee gave Delilah a key to his apartment.
After a long day of dealing with Delilah's ex and DiNozzo, McGee was ready for a peaceful evening with his girlfriend. However, something weighed heavy on his heart. Delilah told DiNozzo—not McGee—about her dream job in Dubai.
Once they were alone in the car, McGee asked Delilah why she hadn't opened up to him. She acknowledged that she was nervous the conversation would take a toll on their relationship. To prove his commitment, McGee told Delilah that he wanted her to take the job and pursue her passion, and that he would also have a key to his apartment waiting for her when she returned.
Watch #McLilah take a major step in their relationship in "Page Not Found" (Episode 20, Season 11 of NCIS) on CBS All Access.