Photo: Hallmark Channel Before shacking up with British royalty and doing a 180 back to the States, Meghan Markle was, as we all know, best known for her acting work on USA’s legal drama Suits . What most people don’t bother to engage with, however, is that Markle’s sparkle made its way to the Hallmark Channel on two occasions , the latter one being a 2016 romp called Dater’s Handbook. It is … fine. More than passable, even. It’s typical algorithmic Hallmark fare, in which Markle portrays a HBIC marketing executive plagued by mediocre boyfriends, who gets cajoled into taking relationship advice from a book. The man that the book says she should choose? A cauliflower floret has more charisma, obviously. And the other guy, who dares to be “spontaneous” and “fun”? That’s a hard book pass. “I’m just drawn to how relatable the script is. When I first read it, I thought, There are so many women who are going to connect with this story of trying to find a balance in work and also in relationships and trying to find love ,” Markle previously explained , quite earnestly, about choosing the role. “It’s really heartwarming and affirming and…