This is entrapment, plain and simple....but I disagree with letting him "slide" too.
A "sexual encounter" date needed to be setup, and if they guy arrived on the scene, THEN arrest/charge him before he commits the crime but after he has shown clear intention of committing a crime.
As it stands, he's done nothing more significant than expose himself as a dirty old man who finds teenage women attractive.....and a lot of us fall into that category.
Brooke Hogan, only 18. I rest my case.