Charlie Sheen Back to Alcohol & Drug Abuse, Wild Partying

Charlie Sheen

Having wrapped the TV series based on the 2003 film Anger Management, Charlie Sheen has reportedly fallen off the wagon and resumed wild, drug fueled partying with adult film actresses.

A source tells Celebuzz that Charlie's friends are advising him to seek help, but the actor believes he is just having a good time, having finished an assignment.

"He doesn't want to stop. In his eyes, he thinks, 'I'm having fun, so what?' The show has wrapped, he's done. So Charlie is thinking, 'What's the problem?' But it is a problem… a major problem," explains the Celebuzz source.

The insider adds that Charlie is spending "thousands of dollars" each day and has "alienated his kids and commitments."

Celebuzz earlier reported that Charlie's former wife Brooke Mueller, 34, had recently checked back into rehab, after a four-day binge with Charlie in early May.

Charlie and Brooke are parents to twins Bob and Max, born on March 14, 2009.

Brooke's return to rehab violates the terms of her probation and could potentially land her in jail.