She is loving him still after all this time

The day was early, and the sun was already shining bright. 
We had matching white shirt; I know it meant nothing because so did a hundred other people there. But I was glad we did.
You look different. Bigger. Better. Older.
You grew up. And I believe so did I.
That small electricity under my skin when I saw you; it used to be a lot like love, but I guess it's more of an obsession now.
I don't know what to call you, though. An obsession? A past? A stupid mistake? The one that got away? The untouchable? A hopeless dream? The one I will always have feelings for? What?
I know the small details about you; just the way kids do when they think they have a crush on someone.
I know the struggle you're facing, and in some ways we're very similar that way.
But I don't know you. And you don't know me.
In a way, maybe this is the way I've always wanted us to be. 
Perfect strangers.
Because strangers will never hate each other. Because strangers have the appeal to always be the mystery we want to solve, and you can be that for me. A mystery. A case I will never close. The one thing that will keep me going.
You should stop feeling like you're useless. Because you're not. You've been a big part of my life, and you don't even know it. 
Across a park, a stolen glance.
A lifetime of wondering if I'll ever see you again.

The last two lines were inspired by Iain Thomas's I Wrote This For You blog.