The 26-year-old has been charged with the premeditated murder of the 29-year-old model in Pistorius's home in Pretoria.
Just days before the Steenkamp's death, the double amputee revealed to his former headteacher at the Pretoria Boys High School Bill Schroder that he intended to leave the gated complex for a place in Johannesburg.
"Oscar never mentioned Reeva to me," Schroder told the Daily Mail. "He never mentioned any girlfriends to me. I knew he was popular with the ladies because he was so charismatic and very good looking.
"He was very excited about moving. His social life is there and a lot of the appearances he did so it was just more convenient. He was thinking of having a flat in Pretoria Monday to Friday where he trains. He was working hard and looking forward to an event in Australia in a couple of weeks."
Pistorius revealed in a statement at Pretoria Magistrates' Court today that when he fired shots at the bathroom door, he thought he was aiming at an intruder, not his girlfriend.