Steenkamp was a keen horserider until she fell and broke her back in her early twenties.
Having had to learn to walk again, she could empathise something of the struggle Pistorius faced as an amputee.
The couple shared a love of cars - many of the Whatsapp messages they exchanged between them that were later retrieved by police were on that topic.
They swapped pictures and in one exchange, joked about “christening” Pistorius's new BMW M6 by having sex on its roof or bonnet.
Pistorius spent his early years in wealthy circumstances but his parents divorced when he was six and his father was declared bankrupt - meaning, he said in his autobiography, they relied on handouts from his paternal grandmother, and his mother had to scrimp and save to ensure he and his two siblings did not go without.
Steenkamp's parents also separated when she was young, and her father Barry struggled to support the family through work as a racehorse trainer.
When she moved to Johannesburg in her late twenties, she used her limited earnings to support them.
Three days after they met, Steenkamp tweeted: “The only guy you need in your life is the one who proves that he needs you in his.” Two days after that, she added: “Blessed beyond words....” But their early relationship was not all plain-sailing.An athlete, he understood her model's preoccupation with health, diet and appearance.He complemented her on dresses and regularly told her she looked “amazing".He said the morning after their first date there was a media frenzy, and Steenkamp, 29, began receiving “hate mail” from people comparing her to Miss Taylor.“I never replied to any of the journalists, I never gave my opinion because I knew what was right and what was wrong but for Reeva it was very difficult,” he said.“I think if anything I was maybe more into her than she was at times to me.