Have you ever had a friend get jealous of your other friend?
Like say, you hang around with the one friend more and do things without that person a lot more... Then the jealous friends starts acting stupid because of it?
I wouldn't say in that sense of being jealousy, but in high school, I got annoyed at how I didn't get invited to some hangouts, but the next day they'll talk to me about how awesome it was and I should have been there.