From my research and imo-only, many psychopathic sexual predators begin their deviant behavior during adolescence(aprox age 14). This is the age that many, if not most cross the threshold from fantasy(many times *advertiser censored* induced)to dark reality. Many, if not most sexual predators/serial killers have two selves; good Jesse is empathetic, selfless, polite, courteous and shows remorse(teddy bear) and evil Jesse(polar opposites). Evil Jesse does not have empathy for others, is filled with unbridled violent rage, and has no human emotions; analogous to a mountain lion. Evil Jesse would be extremely quick & deep thinking/instinctive, creative, calculating, manipulating, and deflective, imo.
RSBM
If he is truly highly psychopathic "Good Jesse" is nothing more than an act/mask he has learn by mimicking how he sees other people behave socially because he has learned thats what is socially acceptable. I'd highly recommend Dr. Robert Hares book "Without Conscience" gave me really good insight in to these people. Beyond helping with cases like this it's important information because many of these people are around and most are not violent sex offenders but they will cause damage and chaos if you let them into your life.