As a Massachusetts father of three stands trial for his wife’s alleged murder, a person who was having an affair with the lady took the stand on Thursday.
Brian Walshe is accused of murdering after which dismembering his spouse, 39-year-old Ana Walshe, round New Yr’s Day in 2023. He pleaded guilty final month, forward of the trial, to deceptive police and unlawfully conveying a physique, although he denies that he killed his spouse and has pleaded not responsible to homicide. Ana Walshe’s physique has not been discovered.
In the course of the trial’s opening statements this week, protection attorneys stated that Brian Walshe discovered his spouse useless in mattress on New Yr’s Day after which panicked and lied to police as they investigated her disappearance — however maintained he didn’t kill her.
Brian Walshe attends his trial for murdering his spouse Ana, on Dec. 4, 2025, in Dedham, Mass.
Matt Stone/The Boston Herald by way of AP, Pool
On day 4 of the homicide trial in Dedham, Massachusetts, on Thursday, jurors heard testimony from a person Ana Walshe was having an affair with earlier than she went lacking — in addition to a voicemail Brian Walshe left him on the day she was reported lacking.
William Fastow, an actual property dealer in Washington, D.C., stated he met Ana Walshe whereas she was on the lookout for a house within the D.C. space for her household, and helped her buy a townhouse in 2022.
On the time, Brian Walshe and their three youngsters had been residing in Massachusetts whereas he was awaiting sentencing in a federal fraud case after pleading responsible to a scheme to promote counterfeit Andy Warhol work.
Fastow stated he was separated from his spouse when he and Ana Walshe began an affair after she moved to D.C. for a job.
“We rapidly turned shut buddies, then confidants and, earlier than lengthy, we began an intimate relationship,” he stated.
“We’d share conversations about our lives, what we had been going by way of, private troubles, these kinds of issues,” he stated.
Fastow stated Ana Walshe was “despondent” about being away from her youngsters a lot, and that the youngsters had been in Massachusetts with their father as a result of “his dwelling confinement was predicated on him being the first caregiver.”
“Initially, she felt that it was one thing mandatory for her to get by way of, however as time got here on, it turned a major situation for her. It deeply upset her,” he stated.
“Ana felt deeply upset that she wasn’t able to be the mom the youngsters deserved,” he stated.

William Fastow, Ana Walshe’s boyfriend, appears to be like at an image of Ana whereas on the witness stand throughout Brian Walshe’s trial for murdering his spouse Ana, on Dec. 4, 2025, in Dedham, Mass.
Matt Stone/The Boston Herald by way of AP, Pool
He testified that the federal fraud case was a “large stressor” in Ana Walshe’s marriage and “it felt prefer it was holding up her life.” He stated she and her husband additionally had a “heated” argument over bank card costs she advised him Brian Walshe made for a sports activities memorabilia enterprise.
He stated their relationship was saved hidden from Ana Walshe’s husband, however it was critical they usually had been planning to take journeys overseas collectively.
“Ana felt it was actually necessary that when Brian was to seek out out in regards to the relationship, that he would hear it from her, she had expressed nice concern, and I believe she felt it will be a strike in opposition to her integrity if he discovered a distinct approach,” Fastow stated.
He stated they spent Christmas Eve collectively in 2022, and that she went as much as Massachusetts the next day. He stated she and Brian Walshe “had an argument” about her not being along with her household on Christmas Eve.
“There have been some factors of rivalry,” he stated.
He stated they had been purported to have dinner to debate their future collectively on Jan. 4, 2023, after they had been each purported to return to D.C. after visiting their youngsters over the vacation. However they by no means had that dinner, and he by no means heard from her after receiving a textual content message from her on New Yr’s Eve wishing him a contented new 12 months.
Ana Walshe’s employer reported her lacking on Jan. 4, 2023. That day, Fastow stated he acquired two calls from Brian Walshe, which he pushed to voicemail.
“I used to be in an intimate relationship together with his spouse. I had not heard from her in a number of days, and admittedly, I used to be involved that perhaps he had discovered and was calling to confront me,” he stated.
Brian Walshe left a voicemail on the second name, which was performed in courtroom.
“I used to be simply reaching out to mainly everyone I might. Ana hasn’t been in contact for a couple of days. I spoke to work immediately. She hasn’t been in,” Brian Walshe is heard on the decision whereas asking if Fastow had heard from her not too long ago.
“I am sorry to trouble you. I am positive the whole lot’s advantageous,” he stated.
Fastow stated he instantly known as again at that time and supplied to go to the D.C. townhouse to see if Ana Walshe was there. Nobody was dwelling, he stated.
On cross-examination, when requested if Ana Walsh ever advised him that her husband was suspicious that she was having an affair, Fastow stated no. He stated he had no data if there was any plan for her to inform Brian Walshe in regards to the affair when she went dwelling for Christmas.

A lacking individual poster that the Cohasset Police produced whereas trying to find Ana Walshe proven on the primary day of the Brian Walshe homicide trial in Norfolk Superior Court docket, on Dec. 1, 2025, in Dedham, Mass.
Greg Derr/The Patriot Ledger by way of AP, Pool
Prosecutors allege that Brian Walshe killed and dismembered his spouse, then disposed of her stays in dumpsters. The web historical past on his units on Jan. 1 included searches reminiscent of “finest option to eliminate a physique,” “how lengthy for somebody to be lacking to inherit” and “finest option to eliminate physique components after a homicide,” prosecutors stated.
On Christmas Day, there was an web seek for Fastow on Brian Walshe’s telephone, prosecutors stated.
Protection attorneys stated that Walshe did not know in regards to the affair and that there was stress of their marriage as a result of federal case however that he liked his spouse.
