Inside Competition

Earlier this week, when I got to work, my boss told me to look at the posting for a job that she will be interviewing for this coming week. If I was interested, she told me, she would love to talk to me. Since I am already experienced with the goings on for the front of the store. It would be nice because a) it is a supervisor position, and the responsibility would make me feel better about working there, instead of just being a cashier, and b) it would be more money.
Anyway, I was pleased that she thought of me, and checked out the job description. Then my coworker, who is one of, I think, three of us who are not full time students at the University, saw our boss walk by and told her he'd read the posting, and would love to interview. And she was like, "Alight, cool. So I have both of you to look forward to for interviews." And he looked and me and sort of sized me up... like, "Oh, she's not going to just hand me this job?"
The next day, on a quiet moment, he asked me if I'd had any managerial experience, which would be a plus for the job. I said, "Hmmm, I don't know... why, have you?" Because I haven't, and I didn't want to tell him that. He has had one job that was being a manager, but I don't think it was at a very big operation, so... whatever. And I did end up telling him that I hadn't. And then he continued to try to discuss the job with me, and with another one of our supervisors, asking what she thought would be good traits to possess. I didn't really see the merit in talking about it with him, so I just kept making jokes about it. Like the fact that my supervisor and I were once again wearing the same colors on the same night being a qualification for the job. You know... being in sync with my peers.
Anyway... I would definitely like the job. But I don't know how the interview is going to go, and it would really be a bummer, and kind of a blow to my confidence if this guy ends up getting the job. Is it mean to hope that if I don't get it, than someone from outside the store will be hired?

On a side note, I have been looking up my coworkers on facebook. Most of them are in the same network as I am, so I can see their profiles. But I haven't friended any of them, even though I do like a lot of them, because I noticed that they aren't already friends with all our other coworkers. So maybe it's just not a thing they do. But, this one girl and I share a common friend, who I went to school with for one year, and this girl must know her from home/highschool. I would love to say, hey, do you know x? But then she would be confused as to why I was bringing it up... Is it awkward to stalk my coworkers? Oh well.