Whew, that's a specific one, and honestly, it's kinda fascinating how writers tackle it. Masky and Hoodie from Marble Hornets are these masked, mostly silent proxies, so the entire foundation of any emotional tension is non-verbal by default. You can't rely on dialogue. It's all in the body language—a tilt of the head, a hesitant reach, the way they stand too close in a hallway after a narrow escape. The scariest part of their canon is the isolation and paranoia, and fanfic transplants that into their relationship; the tension isn't just 'do they like each other,' it's 'can we trust this moment of quiet when the Operator might be watching?' I've read fics where a single touch feels like a betrayal of the entire paranoid world they live in, and that's where the real emotional weight comes from. The mask literally becomes the biggest barrier, both physical and metaphorical, to any kind of vulnerability.
Sometimes it gets a bit cliché, leaning hard into the stoic/silent protector and the slightly more expressive one, but the good stuff uses the shared trauma as a catalyst. The tension isn't just romantic; it's about two broken people who only have each other in this awful situation, and navigating that dependency feels raw and dangerous. You get this slow, cautious unraveling of their defenses, where letting their guard down emotionally feels as risky as taking off the mask physically.