Charlie Sheen Charlie Sheen

Charlie Sheen says a report that he has been cheating on his wife, Brooke Mueller, is false, according to the Two and a Half Men star's rep.

In Touch Weekly is reporting that Sheen was spotted multiple times sneaking into and out of the apartment of lingerie model Angelina Tracy wearing a hooded sweatshirt, sunglasses and a fake mustache.

Charlie Sheen: If I leave Two and a Half Men, "so be it"

"The woman in question is the sister of one of Sheen's campmates, and Sheen was only responding to a 12th step call," Sheen's rep, Stan Rosenfield, told TVGuide.com.

Sheen entered rehab in February after taking a break from his CBS sitcom.

Charlie Sheen entering rehab

Rosenfield also said that Sheen's incognito attire was worn to play a joke on the paparazzi. "Since Sheen knew he was being followed and how this would look, he wore the moustache in a tongue and cheek disguise gesture," he said.