Wow. I'm going through girl troubles as well mate. Same with two of my other friends. Wierd that it's all happening at the same time, eh?
The girl i'm going after is the most pure thing i know. She's honestly like an angel to me. I'm getting close to her, but i'm not flirty at all and I'm generally kind of shy. So it's super hard for me to show her how I feel.
Look, it's hard. It really is. I know what it feels like to wait for something, and then when you know you want it it's to late. Don't do anything drastic. Remember, a day is just a day and you'll live thousands of them. I know it's hard, but think about it. She's still there. It'll be hard, but I bet you can track her down. You know she's on a different train, but it's not impossible to figure out which one. You can find it, then say you got on it by accident, and then reconnect with her. Get her phone number, and keep in touch like that. There isn't just the train, it might be how you met her, but it doesn't have to be your only connection to her.
Keep trying, as long as she and you are alive there is always, ALWAYS a chance.
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