I don't do youth group :/
I'm not saying you dive into youth group, dumb yourself down and hang out at the mall 24/7 like the majority of 14 year old girls....and I'm not saying you have to seek counseling. But I think you should consider letting down some barriers and giving people the chance to get to know you. You're an awesome person and you deserve to enjoy life. And enjoying yourself and enjoying people doesn't make you immature.
Also I went frogging a few weeks ago with friend (whose in his 50s lol) and it made me think of you xD