You're insane; you can't self-diagnose.
lol, anyway I took Intro to Applied Psychology as an elective in 2nd year and learned a lot of fun stuff! 
The fact that someone can't self-diagnose does not mean he's insane. 
Hahah I know, that's why i used a semi-colon instead of a comma.

The "You're insane" was more in response to:
. .. .... <- translation: I am Sane ; )

Yes, psychology is fun! 
OMFG I agree!

That was the best elective I've ever taken. It was interesting, informative and really logical, which was odd because I never thought that personality and human behaviour actually could follow a cause-and-effect relation.

The best thing I took from that course is now I no longer wonder how someone could say or act a certain way, it's more a question of why. And when you know why, you can help them.

Besides, I always have the final word and I say B'rrr is (still) sane. A male being obsessed with a girl is perfectly normal behavior, certainly for a man his age. 
It could also be called stalking!

Or how about the fear of being Say-less for a prolonged period of time.

I know, we all have some degree of this disease, but Rob may be suffering from an abnormal amount.
