A day after apologizing to his girlfriend's family, South African track star Oscar Pistorius returns to the stand.<br/> <br />In his second day of testimony, the defendant would go on to read aloud text messages with Reeva Steenkamp.<br/> <br />(SOUNDBITE) (English) ATHLETE OSCAR PISTORIUS SAYING: (AUDIO ONLY - SOUNDBITE RUNS OVER FOLLOWING SHOT):<br/> <br />"It says, 'you're making me so happy. I know we argue from time to time but I think we're actually so similar.' Then there's a text from her to me saying, 'arguments with us are a struggle with us to find balance inside of new territory for us, and trying to do so with the similar language'."<br/> <br />Pistorius is accused of deliberately killing Steenkamp last year by firing four shots through a locked door after an argument.<br/> <br />The double-amputee athlete has pleaded not guilty, saying he mistook her for an intruder.<br/> <br />(SOUNDBITE) (English) ATHLETE, OSCAR PISTORIUS, SAYING: (AUDIO ONLY - SOUNDBITE RUNS OVER FOLLOWING TWO SHOTS)<br/> <br />"And the
