The problem with the adolescent male navigating that difficult transition from puberty to young adulthood is a disconnect in the timing of an abrupt increase in gonadal hormones that occurs in both sexes at the time of puberty, but which for boys produces intense emotional lability, and high intensity feelings, while the part of the brain that develops risk assessment and emotional control and stability, lags well behind. Girls do not have a similar retardation of that center of the brain and therefore are much less likely to incur the kinds of disasters that face adolescent boys until they are 20.
We also know that girls hit puberty earlier than boys. Girls mature faster, not only physically but emotionally. Therefore it is ridiculous to criminalize adolescent males having sex with adolescent females, when females are more in control of themselves. Recall that adolescence is defined as the period between puberty and roughly the age of 20.
Yet even so, they'll charge a 13 year old little boy for having sex with a 15 year old woman: http://falserapesociety.blogspot.com/2011/05/study-teen-boys-more-likely-than-girls.html