<P> Dixon collapses while arguing in the recording studio with Adrianna, and he is taken to the hospital for observation where he and Ade learn that he has a congential heart condition and he only has 5 years left to live . Adrianna decides to quit making music with him as she feels guilty for putting too much pressure on him when in reality Dixon is dealing with his own guilt about lying to Adrianna as he secretly signed a solo recording contract behind her back . Navid arrives back in town for a visit where Dixon confesses to him the truth but admits he did not tell Adrianna because the label didn't want to sign her . Dixon also accepts a gig to go on tour to play backup for Haley Reinhart, but doesn't tell Adrianna, but she later finds out anyway and forces him to choose either her or his career . He chooses his career over her . Soon after Austin returns to Los Angeles and offers to be Adrianna's new manager, suggesting she start singing country music as a change of tune to her career after Dixon leaves town without saying goodbye . Austin enlists his father, Judd Ridge, to help launch Adrianna's new country - western career as a side act . Adrianna deals with Dixon leaving her by writing songs, two of which she sings live at different events . Eventually Dixon decides returns from touring with his band where he calls Adrianna to give their relationship a second chance . Adrianna agrees, but soon regrets it when Dixon fails to show up at their meeting spot and she thinks he bailed on her again, but in reality he gets into a fatal car accident with his bandmates . During the final moment of the season, Adrianna leaves town with Austin to go on tour as the latest country - western star and him as her manager . </P> <P> Adrianna continues her country music tour, unaware that Dixon has gotten into a life - threatening car accident and is in a coma in a hospital back in Los Angeles .' Ade' then has an unforgettable evening after another show in Las Vegas when she hooks up with a handsome stranger named Taylor . Annie finally manages to contact Ade in Vegas and gets her to return to Los Angeles to be with an unconscious Dixon, and the two girls decide to move into the beach apartment together . Adrianna soon learns that Taylor has become Liam and Navid's business partner and she fails at attempting to avoid him after she becomes confused about her feelings toward him after he kisses her . Dixon, unaware of what has happened between Ade and Taylor, encourages Ade to hire Taylor to create her new music video concept . After Taylor dares Adrianna to show him how sexy she can be, she realizes that she has feeling for him . As Dixon continues to recuperate, Adrianna confides in Annie that she and Dixon are having intimacy issues . After her relationship with Dixon is over, Ade decides to pay much more attention to her friends and mainly with Silver . The two made a show in a truck where they could interview people about their clients . However, when Naomi and Annie's step brother Mark comes in between the two, they promise not to have a date with him and put their friendship over this . After Naomi's party night, Silver hooks up with Mark and later confides it to Ade, leaving Ade confused and worried about their friendship . </P> <P> The series ends with Adrianna and Navid back together . Ready to get a house, a dog and a fireplace . </P> <P> The character of Adrianna was originally scripted as a guest spot in the series' pilot . When Lowndes was cast, she only knew that her character was a singer in the school musical, and as a singer herself, she was excited to sing on television . However, Lowndes was surprised when "they chopped my hair off, and wrote this amazing material for me in which I had a drug addiction and I was dying . I honestly didn't know where it was going ." The day after she filmed the drug overdose scene, Lowndes was offered series regular status . Michael Ausiello of Entertainment Weekly reported that the character was upgraded because she created more storyline . </P>

Who does adrianna end up with in 90210