I just decided to read your post and wanted to
say that the reason you probably only feel that way
around people your own age is because teenagers while
still people, you feel you don't have to prove anything
to them because they probably aren't going to become
your best friends. As for the older people (in their
30's) is because the older the person is the more
mature they seem to be and the less judgemental. With
people your own age you want to fit and belong with
people your own age. that's just my theory though LOL