It reads like a very rough draft, so there is a lot missing. One starting point might be to remove the "I" from the equation, rewrite to make it more universal. This is the sort of piece, going on the emotions, that you need to write for the reader, not yourself. Take it or leave it, it's just a thought:
He stands and sees her
gazing out her window,
nothing seperating them,
just a thin plate of glass,
and distance.
Tell us the story. I've seen you do it before.
You can do it again.