I was thinking the romantic interest thing right out of the gate. I like your emotional need take, too. Either way it's not work appropriate esp. if OP has communicated their disinterest before.
I also like your direct communication prompt.
While you're right about how HR works/how to go about it, I find HR a hammer when a finesse tool might work. OP could ask their manager how to deal with it. Not only does this put it on the radar, but it's a bit less official, and might yield the gray zone outcome OP is looking for
I would do 12 x 12 nights on a mine. Saw some cool shit. Light pillars, and northern lights like you wouldn't believe. A few lynx.
Wouldn't do it again unless you at least tripled my salary. Nightshift gut is awful. feeling like you've got a sandbox in your eyes also sucks. Nothing like changing a tire on a pickup in -50C with no one around... Two nights in a row to support day shift.