S1+2 Jon had me doomed from the start because I specifically have a thing for very composed reserved people losing their composure.
Jon loosening his tie and leaning his head back in his desk chair, exhausted still in the archive at midnight. Jon sliding his hand under his glasses to rub his eyes with an exasperated sigh after a rough statement.
So tightly wound that he’s ready to snap at any moment and all it takes is the tiniest things. Getting heated with Tim who grabs the front of his shirt and suddenly mr high and mighty has no words left. Demanding Elias to take their safety seriously and getting in his face about it for the first time, before freezing realizing Elias is just smirking in response. Martin lightly placing his hand on Jons shoulder just to check in and Jon dramatically jolts in surprise locking eyes with him with an expression that isn’t exactly annoyance for once (Martin will be thinking about this for months).
It’s nothing to do with actually finding his coworkers/employees/boss attractive, it’s just a desperate need for some kind of stress relief. So by the time someone actually comes on to him he’s a mess.