Why do I feel alone? Is this a normal phase for every human being?

My old friends have moved away, so have I... My new friends are drifting away--since that day I told my best friend about my feelings for her, she and our other friends have drifted away from me. I told her ex (one of my friends) what happened, and he was okay with it and he didn't give a damn, so nothing's changed. Problem is, he and two of our other friends are way out in Iraq fighting that stupid war, and we have no communication lately. My former "crush" isn't with us anymore, because she was forbidden to hang out with us. One of us is training with the Airforce, some of my friends I only see a few times a week, some have stopped showing up completely... I only have four people I can talk to now... I feel so friendless, so alone... Is this a normal phase for anyone?