A New Man for Kate Walsh
09/22/2009 AT 05:20 PM EDT
When asked about her hot date, Walsh told PEOPLE, "I'm not going to talk about that! I know you have to ask, but it's super top-secret! It's in the vault!"
What wasn't secret was their affection. In the Architectural Digest greenroom at the Emmy Awards, Walsh introduced Andrea to actor Chris O'Donnell as "my boyfriend." Later, the pair were seen locking lips, according to the New York Daily News.
Andrea also supported her at the ABC Private Practice "Blow Out Cancer" charity event benefiting the American Cancer Society Monday night at Spago in Beverly Hills.
At the Private Practice event Monday, Walsh, 41, and Andrea, 35, arrived together but Walsh talked to the press while Andrea quietly slipped inside to hold court with her costars Taye Diggs, Tim Daly, Paul Adelstein, and Chris Lowell.
In a March cover story for Redbook, Walsh thanked her friends and family for supporting her after Young, whom she married in September 2007, filed for divorce in December 2008 citing irreconcilable differences. She said, "Alex and I still care for each other, and I wish him nothing but the best."
Reporting by ELAINE ARADILLAS and REAGAN ALEXANDER