Use apps like Snapchat to ensure they are who they say they are (if they refuse to verify via snap or insta's snap feature don't bother with them). If they are not local delete them immediately if they ever ask for money or give a sob story, no matter how long you've been chatting! Protect yourself and don't be a fool as the Internet can be amazing on one side (have many chat buds on Snap and other apps who have verified themselves too and never asked for money) and horrible on the other side(i dont give any others a chance).
What do you mean snap feature? Can you explain?