When a person giving testimony gives added detail like this, red flags start going up. Another example is when he went upstairs to get Reeva's handbag and added words to the effect, "I didn't go through it". No-one suggested that he did. Immediately that raises the suspicion that that's exactly what he did.
Once you know the whole story and you listen to it again, you pick up so much more because you're listening to it in a totally different way, such as "Get the *advertiser censored** out of my house". If he was speaking to an unknown person he would have said, "Get the *advertiser censored** out". By adding "my house", to me that implies that he's saying it to someone he knows. He did, and it was Reeva.
Or put something in it.