I'd come and model for you any day!
I promise I won't stare at you, but I may drool a little
Seriously though, if he does make you uncomfortable perhaps you should have a word about it to him or your tutor.
If he does it to everybody, then perhaps it's just his manner, but if it's just you
then it sounds like he's got an issue which should be addressed.
In my experience, models usually tend not to look at the artists.
I know when I'm modelling I tend to get the giggles if I look watch the artists too closely.
I particularly like the 10 min standing pose one.