ABO AU where Poe and Finn aren't separated when they crash on Jakku. Instead Poe goes into Heat, because shit, Finn is his true mate. Luckily Finn, after being in the First Order for so long, has basically learned perfect control of his alpha instincts, because alphas who stepped out of line in the FO were decommissioned. Finn doesn't want to be rapey, but Poe starts to take his perfect control as a sign that Finn doesn't want him.