<P> Kelly faced several difficult issues and obstacles, often with the assistance of loved ones, including her occasionally difficult home life, being trapped in a fire, being tricked into joining a cult, and becoming temporarily addicted to cocaine . In addition to many other matters, she endured getting amnesia, shooting her rapist in self - defense, becoming unexpectedly pregnant and having a miscarriage, and learning that it would be difficult for her to have children because of a condition called endometriosis . In overcoming these matters, she was able to become a better person and help others . </P> <P> Tori Spelling's Donna Martin and Kathleen Robertson's Clare Arnold were among Kelly's best friends and roommates . Tiffani Thiessen's Valerie, who replaced Brenda, became Kelly's nemesis, but right before Valerie's departure, the two women formed a truce . </P> <P> Kelly's two most prominent romantic relationships were with Jason Priestley's Brandon and Luke Perry's Dylan . In season 5, she was faced with making a choice between the two, as a result of Brandon proposing and Dylan confessing his feelings for her and asking her to leave with him on a trip around the world . She declined to choose between the two men at that time, instead stating, "I choose me," but also affirming her love for both of them . In the seventh season, however, she finally stated that she had chosen Brandon . She nearly married Brandon, but the two decided that they were not ready . Following Jason Priestley's departure from the series, Jennie Garth became the officially billed lead, with the character of Kelly further maturing, reuniting romantically with Dylan, and starting her own PR firm . </P> <P> For the launch of the series Melrose Place in 1992, Jennie Garth made a multi-episode special guest appearance . During the final episodes of Beverly Hills, 90210 season 2, Grant Show played his Melrose Place character Jake, who started a relationship with Kelly which led into early episodes of the spin - off . During Kelly's appearances, her relationship with Jake was largely on - and - off due to his discomfort with her youth . In the end, after weeks of trying to break up with Kelly, Jake pretended to cheat on her, prompting her to leave him . Afterward on both Beverly Hills, 90210 and Melrose Place, Kelly, Donna, Jake, and others made occasional comments concerning Kelly and Jake's brief relationship . </P>

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