The former couple announced their plans to divorce last Thursday after it was alleged that Kutcher slept with 22-year-old Sara Leal on the weekend of their sixth wedding anniversary.
But a source told Us Weekly that Moore, 49, and Kutcher, 33, both visited the Beverly Hills home of a friend over the weekend that's 'affiliated with Kabbalah'.
'Some people who go there refer to it as the 'Kabbalah House',' said the source.
The pair apparently arrived separately but left together before getting into separate cars.
'They seemed very sombre,' said the insider.
Meanwhile Demi is said to be in a better state of mind than when the allegations first surfaced.
'When I saw her in early November, she was confident,' said a source. 'She said she'd gotten to a self-loathing and vain place, but it was going to change.
'Demi's been telling friends that it gets easier every day. She's very optimistic.'