All in all pretty good. I have one thing to say though about this line:

"When we would laugh together and cry together"

See how you use together twice. Try to avoid using words again, especially in the same sentence. You could have fixed it very simply by doing this:

"When we would laugh and cry together"

See how that flows so much better.

For verbs or adjectives use a thesaurus. I'm not saying you have an elementary vocabulary. I know of many great poets that use them like the bible. That's all for now

This is a very nicely written poem with a true emotions showing, keep it up dear.