Detailed Instructions: In this task, you're given a context passage. Your job is to generate relevant questions that can be answered by directly referring to the passage.
Q: I certainly don't need someone who keeps nagging about loosing weight all the while rejecting to do anything against it . So when this other more solemn but dear friend of mine approached me to do the competition with her , I would have been awefully stupid to say no . So yes , I behaved immaturely not to tell you that you are a lazy , fat , depressed person and that I could no longer stand the sight of you ... but would it have changed anything ? No , cause you're so incredibly full of yourself .
A:
Why did I behave immaturely ?