of course they know. i strokes their ego massively. in the earlier days of the internet (before social media really took off), i remember receiving a few pictures from women like your picture and i would comment on things like the food, where the picture was taken and so on and not giving her a single complement. these women were all at least 7-8 out of 10. they're so used to getting complements about themselves, do you know what they did after they sent several of these pictures? keep in mind these pictures are where it's them doing yoga or some summer outfit (all excuses to dress slutty and show off what they had). they would point out that: "my nipplies are showing in that one hehe" and they would make a point of it, pretending not to have realised. when everything about the pictures, from the pose, the outfit, the makeup has all been carefully chosen. it's just a way of making sure i noticed and trying to get a reaction. if you don't react it really messes with their brains. to the point where they will travel thousands of miles to meet you, and let you cum inside them, to finally get that validation that, yes he actually finds me attractive!
Ireland