"If they display some obvious gesture like eye rolling or simply shutting down the conversation, chances are they don't care enough to engage." Showing contempt is another sign that they're just tolerating you.

What does it mean if someone tolerates you?

It means you allow something to happen or exist, even if you don't really like it. For example, you don't like your neighbor's loud music but you tolerate because he only blasts it on Saturday afternoons.

How do you tell if someone is tolerating you?