You might not be too mature for your age - the others might be too childish.
Especially when you've lost someone dear or you had some bad experiences in the past, you get another perception of everything - a perception the others don't have and don't understand.
If you don't grow closer than to know each others names, you aren't friends at all.
Anyways, friends aren't that important.
Translates to: Before trying to change your character to fit the expectations of the others, it's better to wait until you find someone similar to you because of this
>>2.