Sex is mostly mental. The story started out realizing that with Shoyu refusing to have sex after a trauma. Even if he gets back together with someone he loves, that doesn't mean he's going to relax enough for everything to feel good and his body isn't going to panic. It was bad enough to send him to the hospital and he spent years being afraid. He isn't going to suddenly feel good the next time and go with the flow. Also, the seme said again he didn't care how much he hurt Shoyu, he was going to keep going even as an adult. That isn't romance, that's selfishness.
Sex is mostly mental. The story started out realizing that with Shoyu refusing to have sex after a trauma. Even if he gets back together with someone he loves, that doesn't mean he's going to relax enough for everything to feel good and his body isn't going to panic. It was bad enough to send him to the hospital and he spent years being afraid. He isn't going to suddenly feel good the next time and go with the flow. Also, the seme said again he didn't care how much he hurt Shoyu, he was going to keep going even as an adult. That isn't romance, that's selfishness.