Gable Tostee says there are "lots of things" he could have changed about his night with Tinder date Warriena Wright, but has defended restraining the young woman and locking her out on his balcony.
Mr Tostee has spoken publicly for the first time since he was cleared of killing the New Zealand tourist, who fell to her death from his high-rise apartment on the Gold Coast in 2014.
The 30-year-old was pressed on what he would do if he had the chance over again.
"Well, a lot of things I could've changed about that night," he told the Nine Network's 60 Minutes programme in a paid interview aired on Sunday.
"Taken her home earlier, in hindsight. But you don't get hindsight when you've never experienced something like this in your entire life."
Mr Tostee said he restained Ms Wright because she was attacking him.
"I didn't know what else to do. I was just, ah, I wanted it to stop," he said.
"This was a guest in my house. It wasn't supposed to be like this."
Mr Tostee defended locking Ms Wright out on his balcony, instead of using his front door, after "bundling her up" when an altercation broke out between the pair.
"It was a lot, lot closer to the balcony door, and it was wide open, and it was the logical option at the time," he said.
Ms Wright fell to her death 27 second later.
Mr Tostee said he didn't hear her scream and claimed there was "no purpose" to looking over the edge to see if she was alive.
"All I saw was her on the other side of the rail for a fleeting moment and then... and then she was gone," he said.
"Instinctively, I knew that if I ran out there and somebody saw me looking over the edge and she had actually fallen all the way, it would look like, you know, it would not look good."
Earlier threatening Ms Wright by saying, "You're lucky I haven't chucked you off my balcony" was a "horribly unfortunate" choice of words, Mr Tostee said.
"Yeah, and I didn't intend that as a threat. I intended it as a figure of speech to say, 'You're lucky I've been so tolerant with you'."
Reporter Liam Bartlett asked Mr Tostee if he could understand why many people considered him a "cold, heartless, cruel bastard" for his attitude and actions.
"When you put it that way, when that's all you say about a person, with no insight or explanation, you know, the media can make people think what the media wants people to think," he replied.
The carpet layer was last month acquitted of killing the 26-year-old, who fell from the 14th floor balcony of his apartment in August 2014.
Mr Tostee recorded their encounter on his mobile phone, and the entire 139-minute audio recording was played to a jury during his six-day trial.
It included the confrontation between Mr Tostee and Ms Wright that led to her being locked out on the balcony and falling to her death while trying to climb down.
"I hate the fact that the last thing Warriena experienced was an argument, an altercation," Mr Tostee told 60 Minutes.