This happens both with food and beautiful women.
He mimics your gestures Studies show that when we like someone, we tend to mirror their gestures, without really realizing it.
The opposite of this homeless person is an attractive person.
Remember that flirting is all about having fun! When you see this, especially when it happens more often, you are more or less in.
This even goes into flirting style, which for men tends to be more thought out, whereas women tend to be more intuitive.
This leads to my next sign… 4.