Kunis was seen Monday morning in Beverly Hills, and was trying to keep a low profile with a hoodie pulled down over her head.
The wife, and mother of Kutcher's children, wasn't in a cheery mood but did seek comfort in a friend, as she was seen in a long embrace with a mystery woman.
The 36-year-old former star of "That 70's Show" has not commented on the revelations by Demi Moore, which are coming to light in the "Striptease" star's new book, "Inside Out."
In her memoir, Moore comes clean that she and her ex-husband engaged in multiple threesomes during their marriage, which she claims were at the behest of Kutcher.
She also claims to have given up 20-years of sobriety to party with him during the marriage, and admits, "I wanted to show him how great and fun I could be."
Moore claims that the threesomes led to infidelity in the marriage, and that it blurred the boundaries of the former couple.
The nail in the coffin for Moore and Kutcher, back in 2011, apparently came after he cheated on her during his "That 70's Show" co-star Danny Masterson's bachelor party.
Kutcher and Kunis, who have two children together, have not made any public statements regarding Moore's accusations in her memoir.
The couple also hasn't been seen at a public event together since August, when they attended Clayton Kershaw's 6th Annual Ping Pong 4 Purpose Event.
Kutcher was last seen when he gave testimony in court against the "Hollywood Ripper," who was responsible for the death of one his friends.
Demi Moore's memoir, "Inside Out," is available for purchase on September 24.