This is an issue of ability to consent, nothing more. If someone has the physiological and psychological ability to consent, and have proved this via behavior (like living on their own in a good example), which is judged by experts in brain development (doctors) and stages of cognitive development that accompanies brain development (psychologists), then their age doesn't really matter to the ethics of this. When a child today is abused they see both...but no determination is ever made as to the pertinent question (and it isn't an arbitrary age); CAN THIS PERSON CONSENT?
Some people can consent to contracts, whether business or relationships (like sex for example), when they are 14. I slept with a senior girl in high school who was just 18, and I was a 14 year old freshman. Are you telling me the day before she turned 18 she wasn't a molester, but the day after she was? Are you saying when we reverse the sexes the outrage should be greater? Are you saying I was molested by this woman? Statutorily "raped"? Nonsense, right?
The age of consent makes no sense because it assumes due to age alone one cannot consent, but some 14 year olds are physiologically capable and psychologically capable, while others are not. The fact some parent gets outraged makes no fucking difference at all, as anyone who can fully consent in an informed way can enter into contracts, and is an adult. The point of law is to stop VICTIMIZATION. A person who can consent and did is not a victim. Now, many can give consent but be incapable of it physiologically or psychologically, but when the accusation occurs, the justice system in the hypothetical will investigate, and the first thing to do is what they already do; they take the kid to a psychologist and physician. At this point the process is the same...except here they first determine whether this is indeed a kid or a young adult via scientific tests, perhaps brain scans, etc. to check ability to consent in an informed way fully or not. If they can consent in a fully informed way, like any other adult human, then their individual sovereignty is established. They can dress how they like, live where they like, work where they like, date who they like...despite their age, their parents can no longer rule them.
Why is age such a dumb way to judge this?
1. It doesn't determine if there is a victim or not. That requires establishing whether the person can fully consent as an adult or not. Age is irrelevant to this, although if we graphed it, it is very likely there will be a strong age correlation before the teen years, where we'll see divergence (before this point, basically 100% of kids can't consent fully).
2. Age is not why retarded adults can't consent if the mental issue is bad enough, why Alzheimer's patients are WAY above age but can't consent, etc. You can be ANY AGE and not be able to consent. So, it is CLEAR as clear can be: age is not how to determine if someone can consent to contracts, sexual or otherwise, or not. In all cases, whether kids, the mentally disturbed, the mentally handicapped, those with brain diseases, etc., the issue is one of ability to physiologically and psychologically consent in a fully informed way (which isn't to be confused with actually having full information).