Ellie--me too. I thought the same thing that you did.
But, this trip has been in the works for the last month...ultimately, he wants to got to CA (driving), and he's been talking so much about school and moving there (which has always been the plan, for years). I think this may actually just be a coincidence...especially since I know that he wants Phoenix, and Tucson (where she is) is 1) out of the way of his trip and 2) he really wants Phoenix, not Tucson and 3) he actually has other, childhood friends in Phoenix.
Besides...I know H hasn't talked to her since I blew up on Sunday. (Snooping, yes.) And, even if he was talking to her, would I be able to stop him? If he were to pull that kind of BS on me...well...that would be it. End of story. But I don't really see that happening, anyway. With xow, all I heard about was how cool she was and how alike they were and blah blah blah. And then with psycho, all I heard was about her and MF. H is not acting that way now. To be honest, his calls to FF in AZ were short. Do I think it has potential for trouble? Yes. Especially if I push.
But I also know H. He gets this real kick out of meeting new people, talking to them...and then he gets sick of them pretty quickly. Does it all the time, male and female. He just likes meeting people, but they wear off for him.
I'm also betting this is a symptom of his current restlessness. He wants to just talk and talk with people--anybody--when he gets like this.