You're Blushing

When we blush we get red in the face, particularly in the cheeks and neck. This is because a sudden emotion, such as embarrassment, a sense of shame or pleasure, causes the very small blood vessels just below the surface of the skin to become larger. When these blood vessels are full of blood, the skin looks red.

Blushing is most noticeable on fair-haired, pale skinned people. Young people also blush more obviously than older ones. possibly because older people are embarrassed less often and learn to cope and learn to cope with sudden emotion.