That's your basic fuckboy right there, there's many of them.

It's the intention behind it. Words and actions only go so far, it's the intention you're looking for. For a lot of people that takes time to figure out, and a lot of it is trusting your gut and using patience as a way to show who you are and to see who they really are. Really knowing your boundaries and what you are and aren't comfortable with, being honest with yourself and standing your ground can really show another persons colors overtime even if they're good at hiding it. I understand some connections can happen instantly, and that person would also be consistent with you and honest with you, their intentions wouldn't be malicious. The man you spoke too is intentional malicious. It's not your fault you don't know when someone is a good person, but in life you learn how to navigate that. Use this dude as a lesson for that, it's really all you can do.