No Longer Twelve

[Volaticus]

EDIT 1 (Didn't change too much)
You I like..
are not .. these three..
the person .. line breaks.
I used to like. In relation to the last three lines in the next stanza, I think 'you used to be' would be a better fit. The kiss in the next lines also implies that the narrator did like him, making 'I used to like' feel a bit redundant.
When we were still young Stumbled a little on this line..
you and I shared a kiss. .. and this line..
It was only you with whom .. and this line and the next.
I would share my twelve year old world. I like this image.
You always had an open shoulder
that would be there for all my tears of blue. 'tears of blue' seems a bit generic to me. Perhaps you could come up with a more vivid and expressive way of portraying sadness?

What kind of a man have you grown into? Like I said in my comments below, I think this could be expanded more. Instead of being a question, which to me seems a little out of place here, maybe you could use this line to describe the man a little more, as you do in the lines below.
A man who does not remember me, I don't think this comma's needed.
ever being just twelve years old,
or having his first real kiss.
Now it seems my blue tears Again, 'blue tears': a bit generic in my opinion.
don't have a shoulder Good..
to reside on, .. image.
because you A..
are not .. strong..
you. ending.

Hi,
This is my first time giving crit in serious, so please take my suggestions with a grain of salt. I like the idea of having a line structure of 1-10 and 10-1 syllables, though I think it's very restricting and you have to find just the right words for it all to come together nicely. I like your edit better than your original and I think you've done a decent job, but it still seems a little flat to me. I get the sentiment, but I didn't feel it much. I'd love to read an edit where you get a little more under the skin of the two people and give some clarity on what's made the 'you' become such a different person. Also, I think some of the lines sound a bit awkward, because the syllables have to be in order (I'd presume). I've noted the places (see above) I stumbled. It's all of course just my humble opinion, and you can use or discard whatever you feel like. I hope I don't sound too harsh. I really like the theme you chose with this form of lines sort of fading in and fading out; fits brilliantly with the subject of matter.
My best,
Louise