"... And the person doesn't even know..." This dude is bad at this.
Y'all, if you work in my field and I buy you lunch, it's because I'm trying to hire you.
But you won't have to wonder. I'll start the conversation with something subtle, like "I'm buying today because I'm trying to hire you."
It...uh...works. Really well. Stay tuned for more insightful tips, I guess.