SO SAD: Charlie Sheen Writes A Very Touching Open Letter To Fans - Says His Partying Days Are Behind Him

In the letter in a letter written by the actor, who revealed on live TV on Tuesday that he is living with HIV virus positively explained to fans the turmoil of the last four years. 

He also revealed how he initially believed he had a brain tumour, before discovering the shocking truth that he had in fact contracted the virus. 

Read His Full Letter Below.