The Without a Trace and Unforgettable star's representative has confirmed the dating news to Life & Style magazine after reporters spotted Montgomery walking hand in hand with her new man at a red carpet event on 12 June (12).
An onlooker at the Hollywood event tells the publication, ""Poppy looked really in love. She held his hand and seemed content.""
The new couple reportedly met at an event in Puerto Rico.
Montgomery split from longtime partner Adam Kaufman - the father of her son Jackson - last year (11).