Why would you stay away? He cares for you. He doesn’t want to see you harmed. Or hurt you. That’s another reason why you should be more careful. Seeing you like that was difficult for him.

[Kaworu is genuinely clearly baffled by this. He’d only wanted Lazarus to consider his bond with Paul and how his mistakes could harm him. Lazarus leaving would only hurt Paul further and that’s the last thing he wants.]