Kelly, while on probation from her drug possession arrest the previous season, was working at an AIDS shelter, where she was accidentally injected with a contaminated needle
She thought she had AIDS
She was also shot, went into a coma, woke up only to have amnesia and therefore completely forgetting about her love story with Brandon
New x character Noah helped save Kellys life after he gave her his blood. Kelly than thought that Noah, not Brandon was the love of her love
It took months for Kelly to get her memories back
When she got her memories back, she reunited with Brandon only for him to cheat on her with a scheming, slutty, red haired "sex therapist" named Emma
Emma then started blackmailing Brandon, after he ended their affair, eventually Emma sent Kelly tapes on their love making and conversations!
Kelly broke up with Brandon, again!, only too take him back and finally accept his marriage proposal
However the day of the wedding, Brandon got cold feet and left her at the altar
Next season it was revealed that Kellys nemesis Valerie had written a long letter to Brandon on why he shouldn't marry Kelly
Kelly got a hold of the letter and blamed Valerie for her being left at the altar
Kelly then romanced and became engaged to lawyer Matt Durning, the only problem was that Matt HAD A Secret Wife With A mental illness that he had institualized, that he never mentioned to fiance Kelly
Lauren, Matt's wife, eventually found Matt In Beverly Hills and admitted that she still loved him and that she wouldn't divorce him so he could marry Kelly
Lauren and Matt also discovered a cure for her "brain illness", so Dylan and Kelly flew to Mexico to bring the cure home
The only problem was that Dylan and Kelly slept together, with Dylan cheating on his then girlfriend figure skater from he'll and Donna cousin, later revealed to be her half sister, Gina.
Gina found out and bitch slapped Kelly and wrote SLUT in lipstick on Kelly bathroom mirror
Lauren eventually gave Matt THE divorce, After THE Cure DIDN'T Work after all, and went away to die from her brain disease, leaving Kelly and Matt to get back together, only for Kelly to be raped by scumbag Joe Patch, Joe later found out where Kelly worked and tried to rape her again, but this time Kelly shot and killed his ass in self defense
Kelly was arrested for murder, but it turns out Joe was a client of Matt's, her fiance
Murder charges were dropped after evidence supported Kelly that she killed him in self defense
But she would break up with Matt again, despite the fact that Matt got her murder charges dropped, because she couldn't believe that he would defend a rapist like Joe Patch
