Why the hell are you contacting me?

There's been the wave of recent graduates and their announcements have been irking the hell out me. A few months ago one chick texts me to ask if I've gotten a job yet or because she's finally finished her nursing degree and gotten a job.  I would have congratulated her and been genuinely happy for her had I not felt like there was some malice in her announcement. Why ask me if I've gotten a job yet? Why not state you've graduated and gotten a job? Why the attempt to feel better than? Then today, I get a call from the most unlikely of people someone I see so rarely, I wouldn't even count them as an acquaintance. We've never spoken anything more than hello, and suddenly, she's going our her way to invite me to her graduation. I don't get it we've never invited each other to any other function so why this one? I simply don't get it. Ugh, I hate petty games.