06/14/2005 at 08:00 PM EDT
Matthew Perry and his longtime girlfriend, Rachel Dunn, have called it quits, PEOPLE reports.
"There was no drama involved (in the breakup), just a commitment by Matthew to stay focused on his sobriety," says a source close to the couple. The 35-year-old former Friends star has publicly battled addiction to both alcohol and prescription painkillers in the past.
Dunn, a former fashion student, and Perry met in 2003. Late last year, she briefly moved from New York to Los Angeles to be closer to her beau, but returned East because the couple "drove each other crazy," a friend told PEOPLE in February.
Perry's publicist, Lisa Kasteler, declined to comment on reports of the split.
Perry will host the ESPY Awards on July 17 at Hollywood's Kodak Theatre.