NEW : ` ` This was a guy who tried to be my friend , he decimated me , '' accuser says . NEW : Armstrong was leaving the USADA , when the press claimed he had doped . After years of denials , he admits to performance - enhancing drugs and blood doping . ` ` I will spend the rest of my life ... trying to earn your trust and apologize , '' Armstrong says .
NEW : `` This was a guy who used to be my friend , he decimated me , '' accuser says . NEW : Armstrong regrets fighting the USADA , when the agency claimed he had doped . After years of denials , he admits using performance-enhancing drugs and blood doping . `` I will spend the rest of my life ... trying to earn back trust and apologize , '' Armstrong says .