Henry nodded, smiling a little at that. It was good to know people here that knew how to be supportive without asking millions of questions. It wasn't really an experience he wanted to relive, especially since he so often did in his nightmares. "I'm just paranoid," he muttered, shaking his head a little.
De? Those were the first two letters of this guy's name? Henry's mind was constantly working, which was sometimes not a good thing. In this case, it started running through a list of possible names. Derek, Devon, Demian, Dennunzio... And then he started thinking about what kind of man a Slayer could conceivably fall for. He sincerely doubted it could be a guy who had no clue how to defend himself. Right there is where it clicked. Dean.
Well, he was going to do exactly one thing: Stay out of the middle of it. No one was at fault here, there was nothing that could really be fixed in the traditional sense, so there was nothing for him to do at all. Anything he could even try to do would likely cause more drama and cause him to lose both of them as friends, both of which were unpleasant outcomes.
Instead, he just fiddled with the chalk a bit before tossing her a meaningful glance. This glance clearly said "oh I get it now" and then he glanced at the swords on the wall. "Always wanted to be King Arthur." Which, after that meaningful glance, kind of meant "and now that I get it we'll just pretend I didn't".