I was totally wondering about the psychology of Dirty Old Man John Connor sending his teenage self a hot bodyguard. That could go to a really weird place.

Agree that the dynamic of protect/hurt is interesting; I like that she worries that he will just leave rather than put up with her tough love. But isn't that something that was explored in T2 as well? I dunno. I'm also concerned that SkyNet and the Terminators will turn into Boss Hogg and Sheriff Roscoe P. Coltrane if they don't find some other sources of conflict to drive the plots.