He stopped walking once he heard her call out no. There was hurt, and pain somewhere inside of him and honestly he wasn't used to dealing with things like that, or stuff that was going on with her. Theo was a monster, he had been since he was a child. He wasn't raised by his parents, he was raised by the Dread Doctors, and that messed with a childs head. He was brought up to do things that no child should ever, that no one should. He didn't know any better back then, and it's all he knows now.
Closing his eyes for a moment he let out a slow breath, how was he going to handle this. Never mind the arcs were still circling around him, and he wasn't about to let Kira get hurt because of him. His brows raised at the insult though. You are a giant idiot, Theo. He was about to turn around in face her when he felt the much lesser pain of being punched. Had she used her energy it would have hurt, but this was just something done out of frustration it felt like.
"Ow.." It wasn't sarcastic or anything, but he was a little surprised by it too. Turning he'd face her and look down at her bleeding palm..his brows instantly connected together in a furrow as he reached out one hand like a stop and caution sign and the other reached out to take a hold of the wrist she'd used to punch him. "Yea, you kissed me back then you sent a few volts of electricity threw me. I figured that was a pretty clear sign for thanks but no thanks." He touched lightly on her wrist, his veins turning black as he soaked up some of the pain she had at the moment.