Do I seem old to anyone?

You know, sometime I feel as If I'm growing out of my teenager world. It not like Im growing up as outside but I have feeling that I cant explain. I know so much(not like knowledge) about feeling. It feel so easy for me to understand people. A lot of time people come to me when they sad, angry, heart broken, or even asking me if they should like someone. It seem as if I'm the guy with all the answer but for some weird reason all the things that I say to them help them a lot. Sometime people choose the wrong decide and it not my opinion that they choose it wrong but if anyone look through it, they would know. I would go on and tell them stuff that I never though I would say it. Not bad stuff but expostulate them from it, but they not mad at me a lot of the time they happy that I talk to them. Then one day something bad fall on me. I got this feeling that I can't seem to bear it. I feel so sad and stressed out but got no one to talk to. Like I talk to them, they just think I'm weird. I get this feeling as if they say go away, your problem is so complicated and don't get me involved. Luckily, I found my way out in the end but it still heartbroken to know the truth. I seem fine with it but somehow I try to forget it. Thing around me remind me of the pain. The feeling I get is so hard to bear during those time and it still do.