Theo wasn't sure if Ernie was joking or being flippant or not, but he took what the blond said seriously. In all honesty it was a big ask for Theodore, whose walls and fences and traps and failsafes had been put up when he was very little precisely to stop anyone getting close enough to hurt him anymore than he was already being hurt for fear that he wouldn't be able to cope with anything else. He nodded though, and it was a simple gesture to signify something as significant as his decision to try and let Ernie in. It would be difficult for him but it wasn't just because of Ernie's request - the Healer hadn't hurt Theo when he was at his most vulnerable. He'd earned it if nothing else, and there was nothing more precious to Theo that he could give. "I think... I can do that." he attempted, almost shyly, the fine grains of the person he should have been if he'd led another life.
He did want his wand, Mordred he did, but that was part of it, wasn't it? And what time was it anyway? "It's late, isn't it." he said, sipping at his tea. "Would it be okay with you if I stay here for the night?" he asked, even though it had just been offered. "Am I taking your bed? I can sleep on the couch, it's fine." he hated that he was putting Ernie out further.