Pistorius is charged with the murder of Steenkamp and is schedule to appear in court Tuesday, on the same day Steenkamp will be laid to rest.
Model Vanessa Haywood has known Pistorius for years and says that she's never seen a dark side to the Olympic runner.
"He's incredibly kind and gentle human being." Haywood said.
Tune to Erin Burnett OutFront at 7p and 11p ET on CNN for the full interview with Model Vanessa Haywood.