The duo attended couples therapy, but Griffin "immediately embarked on a high-profile affair with Jenner", Cameron alleges. Instead, she claims that Griffin has left them homeless and destitute after walking out to date Jenner.
The mother-of-three claims that "after cruelly embarrassing his family with his public fawning over Jenner", Griffin told her that he didn't want to live with her any longer, kicking her out of their home.
TMZ Sports broke the story. Brynn Cameron is suing the National Basketball Association star for palimony - but in her lawsuit, she details the turbulent relationship Blake had with the Clips.
When Cameron "stood firm" and refused to sign the prenup as it was, the wedding was postponed with one week's notice, according to the court papers.
The palimony lawsuit does not specify what Cameron is asking from Griffin, but TMZ reports it is definitely in the millions of dollars. They were also engaged (hence the fiancee line above) but that wedding was broken off this past summer after Griffin became taken with Jenner.
Cameron is a former basketball player at the University of Southern California and also has a child with National Football League player and Heisman Trophy victor Matt Leinart. Is Brynn entitled to some cash from Blake or no?
"Griffin has no problem trading Brynn Cameron, his former fiancée and the mother of his two children, for reality television star Kendall Jenner", according to the documents, which compare the 28-year-old basketball player's recent trade from the Los Angeles Clippers to the Detroit Pistons to trading Cameron, 31, for Jenner, 22.
The suit says Griffin "cared more about the glamour of dating a Hollywood celebrity than the day-to-day responsibilities of being a father and family man".
It was reported in December that Griffin's romance with Jenner had sparked a nasty custody battle. "In Griffin's absence, Cameron's brother has had to provide Cameron and the children with financial support".
Griffin had a son and a daughter with Cameron during their eight-year relationship.
In July 2011, although the two were not in an exclusive relationship, Cameron says she remained 'a steady presence in Griffin's life and career'.