The imbalance of power relations can drive child grooming, says Martin Pedler, founder of support group MatrixMen.
Child grooming is the process by which an offender draws a victim into a sexual relationship and maintains that relationship in secrecy.
A former assistant coach at Parktown Boys High is accused of sexually assaulting at least 20 pupils and faces at least 160 charges.
The counts range from attempted murder, exposure to child pornography and grooming.
Pedler, who is also a survivor of sexual abuse, says perpetrators use fear and threats to sustain child grooming.
He probably used it as a form of power and control over these boys.— Martin Pedler, founder of MatrixMen
He explains that the grooming process can take several years and can create the illusion of a "loving or caring experience".
According to Pedler, the shame attached to sexual abuse often means that victims do not speak out.
We find that they have absolute control in the grooming process with threats. It shows you the power that these pedophiles over their victims.— Martin Pedler, founder of MatrixMen
Take a listen to him explain: