A combination of confusion and embarrassment war over Serph's face. He's not sure why Jack would feel that he didn't want him around... was it because they effectively abandoned him during a time of need?

But he does nod; he does indeed still want Jack around. Still, at the mention of the moon warp... it was those events that bothered him. Not so much the sex(? What they did doesn't match up with anything he knows) but more the violence. He'd told John he wouldn't let anyone hurt him like the cult had hurt him, and yet under the moonlight, they had torn into each other. He had eaten John. A little. And he tasted sublime; no monster or demon tasted like that. He's not sure what that means.

"That night we..." Serph begins haltingly, wings tensing. "We tried to kill each other."

Which is why he'd been worrying and fretting about falling into the same patterns again.