The presumption would be that for what is now absolutely in the bill a prohibition—it's not actually five years, if I'm right, but less than five years, so four years plus 364 days—if the age gap is larger than that, one would presume there is sexual exploitation.
It is only through evidence, whether the evidence is found through the non-complaining young person, or wherever the evidence is found—in journals, in the observations of others—That can be tested by a trial judge. In our experience, trial judges are very good not only at knowing whether people are lying—that's more straightforward—but they can detect whether someone actually is being manipulated.