Female eye end discoloration is how to return a responsibility?

A womanA sexual relationship with the opposite sex even if only once, eye end also subtle changes will happen, just must be careful to observe.

The day usually, there is the relationship between male and female, the female's tail skin color, there will be light red, namely the tail skin color is different from other parts of the face, after about half a month later will become dark, the secret to the secret is to identify a virgin.