Charlie Sheen has said he looks back with regret on the "one or two" times he did not want to interrupt the moment to put on a condom.
The former Two And A Half Men actor, who went public last year with the news that he had been diagnosed with HIV, is now promoting Lelo Hex, a re-engineered condom.
He told a press conference in London: "There's times when I think about, you know, what if? What if just those one or two times I didn't succumb to that awkward moment, or feel like, 'This is going to interrupt something passionate', and I had taken the time? My story would be different.
"And so perhaps other people's stories can be different as a result of this."
The American actor said he is proud that after he revealed his condition in a televised interview, online searches for HIV and condoms increased.
Looking back, he said: "Regrets? Professionally, I should have finished Two And A Half Men a little better. A lot better.
"Personally, perhaps had the Lelo Hex been around in one or two of those moments, my story would be different.
"What felt like a regret several months ago has transformed itself into an opportunity and a chance to carry the torch and be an ambassador of goodwill and responsible health."
Charlie said he is currently not dating and is instead spending time with his family, but he added that he has been able to try out the condom himself.
"I've tried them, they're incredible," he said.
But he joked: "Right now I couldn't get laid in a women's prison with a handful of condoms.
"It doesn't give me a great opening line: 'Hey, I've got HIV - busy later?...'
"It is what it is, and I don't want to make light of it, but it changes the whole approach on it, because it's no longer about my interests and my folly, it's about the other person, it's about protecting them and just being open and responsible."
The Lelo Hex condom aims to reduce discomfort, breakage and slippage through a design using a hexagonal structure in the latex.
Sheen said: "It's exciting, it's the first change to the condom in 70 years, and it's not just about changing the dialogue, it's about changing the technology."
The actor also confirmed he is looking to get back into film and television.
He said: "The worm is turning. There is, as we speak, corporate interest from people that make those decisions to put me back on television or in film roles that I think I've earned the right to portray."
He refused to name any upcoming projects.