Getting together, however briefly, with colleagues, perhaps people you can become friends with, is good for the soul. And you know they have no expectations that you won't meet.
Wrt Judas, the best thing to do is ignore them imho. Your boss knows your worth and trusts you to do your job well. That's what matters when facing these kind of people.
Once your exams are done, will you be able to look for work elsewhere?
