The following information was taken directly from the Virginia state legislation website at
http://leg1.state.va.us/cgi-bin/legp504.exe?000+cod+TOC
§ 18.2-63. Carnal knowledge of child between thirteen and fifteen years of age.
If any person carnally knows, without the use of force, a child thirteen years of age or older but under fifteen years of age, such person shall be guilty of a Class 4 felony.
However, if such child is thirteen years of age or older but under fifteen years of age and consents to sexual intercourse and the accused is a minor and such consenting child is three years or more the accused’s junior, the accused shall be guilty of a Class 6 felony. If such consenting child is less than three years the accused’s junior, the accused shall be guilty of a Class 4 misdemeanor.
In calculating whether such child is three years or more a junior of the accused minor, the actual dates of birth of the child and the accused, respectively, shall be used.
For the purposes of this section, (i) a child under the age of thirteen years shall not be considered a consenting child and (ii) “carnal knowledge” includes the acts of sexual intercourse, cunnilingus, fellatio, anallingus, anal intercourse, and animate and inanimate object sexual penetration.