I'm with Elaur. I think his temporary insanity is literally due to overuse of his own frigging chemical coctail, also known as infatuation.
Fi is going mental coz he wants a strong bond with you but feels like you're constantly slithering away, and is giving Te the order to just gain control of the situation already..which he's desperately trying to do.
Personally (disclaimer: don't do this if you thin k he might actually harm you), I'd sit his ass down, tell him to shut up and explain him everything into detail of what's bugging you and how he will lose you if he keeps it up. Then, tell him how to keep you. Give him the outline, the rules on how you work, coz it's clear that he has no clue what to do to get you to return that affection he feels for you, and it's driving him mental.
Make it perfectly clear that if he ignores you on this, you're out the door. Then tell him he can speak. See what he says. If necessary, drive your point home. At this point, ask him what it is he needs to stop being this OCD. What it is that is making him do this. And how you can come to a win-win situation where both your needs are met, so he gets his say too.
If he's not open for adjustment and just keeps wanting to control you...dump his ass.
All in all, the way you described him though, I'd say the poor man has a case of being completely head over heels for you and not knowhing how to handle it properly
Show him some understanding...Fi is a bitch that way