Olson, who dated the actor in 2011, told INSIDE EDITION she was "livid" to learn about his HIV diagnosis.
Charlie Sheen's ex, Bree Olson, is livid about his HIV announcement.
"I could be dead right now!' she told INSIDE EDITION. "I could literally be dead right now because he did not tell me that!"
The 30-year-old former porn star was one of Sheen's "Goddesses" living with him when he lost his role in "Two and a Half Men" in 2011. During a Tuesday interview on the Today show, Sheen revealed it was also the year he was diagnosed as being HIV positive.
Read: Charlie Sheen Reveals He's Been HIV Positive for 4 Years
But Olson told INSIDE EDITION that the actor never revealed the diagnosis to her.
"He says he found out when him and I were together," she said. "I was living in his house. We were having sex every single night."
She said they regularly had sex without protection or they used lambskin condoms, which do not block transmission of diseases such as HIV.
"He used this word: I'm clean. I'm clean and - I know... but I believed him," she said.
"It was like playing Russian Roulette. That's the best way to put it. It was like putting a gun to my head and pulling the trigger each time."
After hearing about Sheen's diagnosis, she immediately had an HIV test, which came back negative. But if it had been positive, there is no way she would've kept it hidden, she said.
"I would never do to anyone what Charlie did to me," she said. "That is giving someone a possible death sentence. I would never do that to someone ever."
But she is now left in disbelief and says Sheen lied to her.
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"There is no one he could have trusted more to have confided this information to than to me," she said.
IE's Megan Alexander asked her: 'Why do you think he didn't?"
"I don't think he cared!" Olson said. "I don't think he cared! I know he didn't care!"
She said she doesn't want to hear from him - but does have a message to give him.
"Charlie, you're a terrible person," she said. "You're a terrible person. I will never forgive you."
Sheen told the Today show on Tuesday that it was "impossible" that he could have transmitted the virus to anyone else.
Watch Below: Charlie Sheen Reveals He Has Been HIV Positive for the Last 4 Years
