In the Life

I just finished Just Listen by Sarah Dessen. I was thinking about it the other day. In it, a lonely girl makes friends with a strange boy who only tells the truth. Annabel (the lonely girl) shared her thoughts with him. In real life, it's not that easy. How do you know what your thoughts are? How do you know if you are lying if you only lie?
Like me, for example. Am I lying if I don't give my thoughts on things? Am I cheating anyone who decides to read this out of actually getting to know me? Am I cheating middle schoolers out of the real high school experience? Am I? Is this lying?
I don't really know what I think honesty is. I doubt that I could ever call myself an honest person. But I've decided that on here, I will try to be honest. I will give my complete opinion on things, so that I am no longer just some stranger on the other side of the computer but a flesh and blood person. I will become honest.
And maybe, trying this, I will come to know what honesty truly is and is not.