You don't need a heart to get hard. A body was still a body without one, nobodies still had to eat, piss and shit, sex wasn't excluded. There wasn't any love in fucking, just relief. Roxas had learned that it was better that way, no cheap words or gentle touches enhanced the experience when you didn't have the heart to give a damn. Demyx was a coward, there was no doubting that, but he was a quick fuck. With him there were no strings attached, nothing said, and nothing left to be desired. They didn't care about each other, and fucked for the sake of fucking. It was quick, rough and unpredictable, and when it was over, it was over. The few times Demyx tried joking around after sex were awkward and did nothing to fill the emptiness of the room. He learned his lesson quickly, or maybe it was just cowardice.
Sometimes Roxas thought about fucking with Axel, they were close enough that he doubt it would change much between them, but the notion went unmentioned. The older man claimed they were, 'best friends,' and maybe they were for all Roxas knew. Things worked, Roxas's life was logical, it made sense. Fucking and friendship were too separate, he knew better than to mix the two. Roxas went through the motions, day in, day out working towards a goal he wasn't sure he cared about. Maybe he was a coward too, but then he supposed that fucking with Demyx made more sense that way.
AN+Disclaimer: Disney+Square Enix owned. Wow, this is the closest thing to porn I've ever written. Prompt me?