this is cole's ex-girlfriend, so they would obviously know each other. i'm not sure how much he knows, so apologies if i'm repeating anything you already know. she and cole were in the same circle of friends in high school but after graduation, they crossed paths again and started hanging out. they were basically the two friends that you side-eye and wonder if they're secretly banging. they weren't but eventually they did start dating in feb 2017 and were together until feb 2018 when things ended abruptly. kelsie was to blame and cole pretty much cut her off and out of his life completely. i don't know how much he would have told blake but i'm pretty sure it's safe to say that blake would have known that she hurt cole, so he probably doesn't have the highest opinion of her? maybe. she's as sweet as can be though and truly cares about cole and regrets hurting him. they pretty much haven't talked since feb of this year though when things ended.