I don't think they SHOULD be capable. I think they are capable, in the way that an eight year old or a passed out person isn't. That's just a biological reality. I'm not saying that it isn't ill advised, just that it's nothing similar to rape or pedophilia and shouldn't be treated as such. I wouldn't permit my 14 year old to have sex with anyone, but if they did I think it should be dealt with disciplinarily not criminally. That is how it goes in most of the industrialized world, and public safety and poor teen sexual health are hardly more rampant in most of those countries. The way to prevent risky sexual behavior is by better parental involvement and access to factual information, not by treating such behavior as horrific crimes with completely different contributing factors.