Article continues below advertisementHilary Duff's husband, Matthew Koma, has jumped into the conversation surrounding Ashley Tisdale's recent essay about leaving a "toxic" mom group - and he did not hold back.Article continues below advertisementOn Tuesday, January 6, Koma, 38, shared a pointed Instagram Story that appeared to directly mock Tisdale's personal essay published in The Cut recently. The musician posted a photoshopped image of himself placed onto Tisdale's body, sitting on a couch next to a houseplant while dressed in an all-black outfit and rose-tinted sunglasses.