He's kept his health issues private for years, but tomorrow Charlie Sheen will reportedly reveal to the world that he is HIV positive.

Rumours kicked off last week when a "blind gossip" style piece was published by Radar Online, suggesting that a well-known Hollywood actor with a string of famous exes had HIV.

After a tabloid report this morning claimed Charlie was indeed the "mystery star," the actor is now apparently set to confirm the news himself on live television.

Popular US morning show TODAY announced via Twitter this evening that the former Two And a Half Men star would be taking part in a "live revealing interview" with their host Matt Lauer tomorrow morning, November 17.

According to E! News, two separate sources have confirmed that the HIV reports are indeed true.

The 50-year-old star, who has been married three times, has allegedly been keeping his diagnosis a secret for years, and has spent in excess of €7million to stop it going public.

According to TMZ, the actor confided in a normal of people he thought he could trust over the years, but news of his diagnosis was soon leaked.

After hearing the rumours, "several of Charlie's former partners" are said to have contacted him, resulting in pay-outs worth millions to keep them quiet. One settlement is said to have occurred as recently as last month.

In a further effort to keep his diagnosis under wraps, the actor reportedly requests that guests to his home sign non-disclosure agreements before entering.

Charlie is father to five children by three different women – Cassandra, 30, with ex-girlfriend Paula Profit, Sam, 11, and Lola, 10, with ex-wife Denise Richards, and twins Bob and Max, 6, with ex-wife Brooke Mueller.

The last few years have been somewhat of a rollercoaster for Charlie, who was fired from Two And A Half Men after going on a weeks-long drug and alcohol bender that producers at Warner Bros referred to as "dangerously self-destructive conduct."

The actor then went on to have a very public breakdown, giving a semi-incoherent interview to ABC’s 20/20, coining his now-infamous phrase "winning."

Since the news went public this evening, the normally outspoken star has remained quiet on social media.