Kensi has been reassigned on a new classified mission, much to his disappointment. Hetty pointed out that the knife that Kensi entrusted to him during the case was her father's, meaning she has a great deal of trust in him. In 'Merry Invasion', Hetty gives both Kensi and Deeks secure satellite phones, under the guise of Christmas gifts, giving them a means to communicate while Kensi is on her mission. In season six, Deeks and Kensi agree to make their relationship official and finally become a couple. They attempt to keep their romance secret until the rest of the team reveal their awareness of their relationship in "Fighting Shadows" when Deeks and Kensi are forced to partner with Callen and Sam respectively. In the same episode, Deeks and Kensi learn Deeks is under investigation by the LAPD for reasons unknown. In season seven, Deeks and Kensi’s relationship remains strong to the point Deeks introduces Kensi to his mother, but they are still worried about the LAPD internal Affairs Investigation. When Deeks is later arrested, the team learn Deeks supposedly murdered his former partner, Francis Boyle back when he was a rookie detective and work to clear his name. When the investigation is concluded, Deeks secretly confides to Hetty he did kill Boyle to protect his old LAPD informant, Tiffany Williams and is deciding whether or not he should tell Kensi. In the following episode, Deeks tells Kensi the truth to which she reveals she already discovered on her own and was waiting for him to tell her when he was ready. Deeks and Kensi's relationship grows significantly stronger and they decide to move in together. By the end of the season, Deeks indirectly proposes to Kensi for the first time. In season eight, Deeks plans on proposing to Kensi, but their relationship faces challenges and difficulties when Kensi is severely injured in a helicopter crash, resulting in her falling into a coma and becoming practically paralysed. Deeks continues to show his love and support for Kensi during this difficult time, even when Kensi begins taking her anger and frustration out on him. Eventually, Deeks proposes to Kensi, but she is refuses to accept in her current state and wishes for him to wait until she has healed from her injuries. Eventually, Kensi fully recovers and resumes her place on the team and her partnership with Deeks. By the end of