Hands sliding over the bared chest before him, Starscream smiled into the kiss, fingers exploring the warming skin curiously. It was so different---sensitive, responsive. Not at all like their real bodies. And certainly, he didn't think that humans bonded the same way their people did, but still.. it seemed that flesh bodies had their fair share of pleasant surprises.
"You're my Skyfire," came the soft, loving response, and Starscream could feel himself beginning to tremble as the kiss lingered, becoming two and three. "Of course I worry." He hadn't seen him in so long.. too long. The fear, the desperation, the hunger was there. He couldn't get enough of him---in the relative quiet, they weren't close enough, and he was trying so hard not to scare Skyfire by completely falling apart.
"I'm not--" His breath hitched, an unusual reaction that he couldn't bring himself to note. "I'm not imagining you, am I?" He stroked his thumbs over the other man's collarbone, the skin and edge of bone a pleasant contrast, and so lovely-- he'd never thought humans particularly attractive before now. Skyfire was handsome no matter his form. "I--" He glanced up, then, crimson eyes a little wild suddenly. "I know that I'm not quite.. right anymore, but I'm mostly certain that I'm not prone to hallucinations." He supposed he could still be lying on the floor in Megatron's throne-room, so damaged that he was seeing things. But it all seemed so real, and it wasn't as if he'd ever imagine himself as a human. All of his previous dreams about Skyfire were memories of their life together before.. everything.
Rather than giving Skyfire a chance to respond, Starscream kissed him again, teeth clicking together and mouth needy and just a touch violent. Was it blasphemy to want Skyfire's hands on him, shaking him? Marking him in a way that would last, so that even if his bonded disappeared, he could see those marks later and know that it had been real.