It means she's nervous, she loves you, or she just ran a mile.
You could be embarrassed
it may be due to 1. this boy is shy around girls and may like you, thus when he is around you he will start to blush without knowing (i know since i do this around girls i like) but their may be other reasons why his face gets red, but their is a high chance that he likes you
Turning red around girls is a natural reaction. Some girls see it as awfully cute.
red in the face
It means they're thinking, "omg, does my foot smell?"
It usually means that He is interested in you. This was answered by a Boy so it is likely to Be right.
The tiny capillaries, which are normally too small to be seen, fill with blood - making them more visible, This makes the face appear red.
freckles
It means to be red in the face!
it something red or "tease" it in a sort of way that gets them mad Wave a flag in its face (its the movement that gets them angry)
that you have eczema
yupp! if shes red on her face that means she was blushing which is what girls usually do if they like you or if there embarrassed.