Is It Normal?

i just want to know if you like someone, like a coworker, and then they get promoted, is it normal to feel jealous? i opted to not interview for a promotion that a came up and a coworker that i like a lot, one that i usually have lunch with once a month, one that i knew had interviewed for the position with no competition to speak of, it still stung.

am i horrible person, i have to ask myself. i feel bad for knowing that inside i'm jealous versus celebrating for her. it's times like this that i wonder if i'm ever gonna grow up. and the scary thing is, i don't have the answer.