I think he's an immature fantasist with narcissistic tendencies. I know the term "narc" gets bandied about here a lot, but he certainly does seem to have a pronounced preoccupation with fantasies of success, ideal love, personal fame, excessive expectations of personal entitlement, exploitation of interpersonal relationships - it all points to what is usually referred to as "functional narcissism".
The whole fantasy about being a rock musician which never came to anything, the fantasy of a "love affair" with an impressionable 15 year old, the fantasy of running away to France (without even being able to speak French, I ask you), the fantasy CV - rock musician, journalist.
He's an absolutely pathetic creature, with no apparent idea of the damage he has done.
It's very sad - for the families, for his wife, and above all for that young woman. He has essentially hijacked her life to satisfy his own selfish fantasies. I wonder if the damage can ever be repaired - certainly she will never be able to shake off her notoriety.
I expect now that the families are no longer worried out of their minds about their personal safety, they would all like to beat the living daylights out of him.