Please do not take that seriously.
As you know, they knew you are the hogu(ajeossi = hogu = Pushover = Easy Money), They just looking for someone who can pay their bills, I think you know this better than me, it does look like you've been gone through this situation many times. Do not be their hogu Man.
This thing looks like pathetic.
And Look at her wording, those wording could not be from regular and ordinary girls.
Don't worry too much, dude. I'm not a Hogu. i think i am enough smart to get advantage in the relationship. I've dated enough girls to get tired of it, and I've had experiences with relationships with big age gaps and even international ones. Still, I appreciate your concern! I hope you don't be Hogu, either!"