Imagine a 300-lb biker dude at your workplace seemed to hang near you a lot. Made a lot of eye contact. Stood maybe a few inches too close. Seemed to have an in

Imagine a 300-lb biker dude at your workplace seemed to hang near you a lot. Made a lot of eye contact. Stood maybe a few inches too close. Seemed to have an interest in you. And didn't seem to notice your non-verbal "go away" signals like walking away, turning your back, stepping away to regain your personal space, etc. The guy clearly has an interest in you. There's nothing specific you can accuse him of, but he makes you uncomfortable. By persisting despite your attempts at rebuff he's implied that he doesn't respect your boundaries. Maybe it'll turn out that he'll leave you alone entirely. He hasn't done any one thing you can accuse him of. But he's giving off a "vibe" (which is an inarticulate way of saying "engaging in subtle behaviors") that in your past experience have been a prelude to anything from uninvited touching to stalking to physical attack. Thus his presence makes you anxious and interferes with your ability to do work because your brain is in constant fear/alert mode. Is this a tenable situation?