Speaking hypothetically...
You don't like someone(let's call her Sonny), let's say, because she acts cute and simply because she's not the kind of friends you can't stand. But let's say that's her way and thus cannot change. After a year plus of friendship, you somehow decided to "don't like" that person because Sonny decided to help another friend which by the way is just joking. Sonny also had a very good reason to not help you; you started it first so you somehow deserved it in the first place. Sonny is now in a very sad because of something that had happened, so it's the time where she needs her friends the most, are you going to let her down? She was joking, she can't always be helping only you, are you going to let something so mere affect your friendship of years?
Speaking hypothetically...
it's end of the year, days away from the last day of school, can't we just enjoy and not fight?