red flags on dating sites if you're a white guy:

Asian woman way out of your league matches with you, tells you she's not actually in your city, and immediately tries to add you on WhatsApp, minutes after beginning to talk. also, rapid fire messages, like she's in a hurry, and she asks questions that suggest she didn't really read your bio.

i added such a person *once* and she was on voice call and it became immediately apparent from her voice that she was older than what she was telling me.

if women move fast like that, it's a huge red flag. 

 I’ve had that happen to me on LinkedIn of all places.  Blocked long before we ever spoke.