I'm still wondering what they were thinking originally. Did they just grab the teen on the spur of the moment? What did they think would happen after that? Was there intention to confine him for a period? (I am assuming so, since the setup seemed to imply some planning.)
Ultimately, why did they take off? It sounds like they took off before the teen escaped. (Perhaps I misunderstood the timeline.)
Was there another party involved? (i.e. "Kenny")
Were both partners equally involved?
I have so many questions. It just doesn't make sense to me.
In the end, I feel so sorry for the teen. It seems that he was embarrassed about the situation he found himself in, and, perhaps he agreed to go along with them, not fully understanding what he was getting himself into. Heck, he is just 16.
I hope he has strong, loving people he can lean on now.