From what I've experienced lately, finding out that someone you have cared dearly for and appreciated has actually pretended to be your friend is overwhelmingly disheartening. Especially in high school, friendships are a crucial part of life; they're what help you get through your troubles when you have no one to turn to and you just can't go to your family for. But they're not forever, and that's a fact.
On New Years' Eve, I found out that one of my closest friends of three years and also my neighbor only considers us "friends because we're neighbors." When I heard that, I was absolutely shocked. Someone who I had cared for dearly, someone who I had spent time with constantly, someone who I had appreciated and a friendship that I put so much effort into because I adored her; it all meant absolutely nothing to her. Surprisingly, though, I wasn't really upset. I just felt betrayed and embarrassed because she completely fooled me into believing she was a good friend.
Ever since, I've been happier. Weird, right? But I've been happy because it helped me realize who my true friends are and that not everyone deserves my unconditional love, care, and appreciation like I originally thought. Truthfully, it's hard to find someone and be able to have the chance of being friends with them for so long. Let's face it, life isn't all that short, it's long as all get out.
One person you will always have no matter what--and no, it's not your mother--is yourself. You will always be your own best friend because you know how to make yourself happy when you're down and you know what's best for you, despite what people like to believe. Sometimes, even telling stories to yourself in the mirror is a totally reasonable way to vent out your emotions; you can't embarrass yourself in front of yourself and you can't be weirded out and choose not to hang out with yourself anymore.
I know this sounds crazy, but it's completely true. It's just always good to understand that when you feel like the whole world is against you and you have no one to turn to--you always have yourself. And eventually, those beautiful, ever-lasting friendships will develop and you'll be happier than ever. Just make sure that you're not wasting your precious energy, love, effort, and time to those who don't deserve someone as beautiful and wonderful as you are.