Answer:
You can only differentiate people by their actions. Talk to them and get to know them. People are mixed in this world. There are good people, there are bad people, and there's a region where many people fall, the in-between. Good people can do bad things and bad people can do good things, it's not a black and white world. If you want to know how someone feels about you, I would get to know them and understand them more. if that condition doesn't exist well, just keep trying to sort it out and show kindness to them, that's the best way to get a reaction.