[So basically, Philip is worried about coming off as "that guy" who makes other people uncomfortable. Not that he made Dean uncomfortable, because it takes a whole lot to unsettle Dean, but he doesn't want to upset this one other normal person.

Well. Where to begin?]

You weren't helpin' yourself when you first met me, dude. I mentioned demons and you looked like one of those guys who wins the lottery and stands there in shock. Kinda gave you away.

[Buuuuut he scratches the back of his head and considers this. No man wants to look weird or awkward in front of a girl. Dean can empathize with that sentiment well enough.]

I'd tell you that healthy relationships aren't built on lies, but that'd be sorta hypocritical of me.

[A thoughtful hum.]

I dunno, does she seem suspicious of anything?