Most Helpful Guy
try reverse image searching the picture. maybe other people are using it or something.
or, they might just be saying that because they want to talk to you and don't know what else to say. Hard to come up with something to say to girls on a dating site that would elicit a response. Antagonism, at least, has a chance of getting an annoyed response, which is still a response..
Most Helpful Girl
I've had someone say that to me once. Only once like, but I took it as a compliment. I just said to them, listen someone has to be that person, and I am.
And people are more aware of catfishes than ever now, so if something looks too good to be true, people are gonna start assuming it is. Or perhaps they image searched the picture, it's usually not hard to find if someone is using a fake.