On the face of it, the poem is laid out to suggest meter, rhythm, and rhyme but instead you've employed free verse with some structural elements. Most of your poem is written in pentameter but you play a bit with quatrameter in your first stanza. My only thought is that if a poem is like a dance, you begin with a Fox Trot but then quickly switch to a Rumba. Your reader wants to take your lead but thinks, "What's she doing?" when you change it up. So it's a bit tricky to fall into your ultimate rhythm and you might tinker a little more with the first stanza to make it roll off the tongue a bit easier and as a prelude to the rest of the poem in the development of your main thought.
The convention of repeating the last word in each line is interesting as a substitute for rhyming, but it gets a little predictable, almost like a word game I've seen played even here on Yahoo! Answers by point gamers with no better questions to ask (i.e."Follow me with a sentence using the last word of my last sentence"). So the attention then goes to how crafty is your employment of that word again, and in a few places it comes off as only top of mind extensions rather than a twist delivering an interesting new thought or image.
I wasn't sure where the poem was really going at first. Was this a pastoral piece to celebrate the beauty of nature? As it turns out, it was a love poem in remembrance of perhaps the greatest love of the writer's life. By virtue of the last line, it all comes into perspective and it is a beautiful thought. In my interpretation, I see this as a poem written by an old man remembering that day in his childhood when he met Sophie who he fell in love with, married and lived the rest of his days in happiness with. The last line is a really beautiful stroke and gives the poem real depth and meaning. But it leaves the reader hungry for a bit more...a note of completion.
If you'd like to make this poem even greater, think about adding an additional stanza at the end to summarize what Sophie has meant to the writer all these years and how his life has been enriched in such a profound way just by knowing and loving her. Write it from the point of view of a man made rich by the love she brought him and all the wiser for choosing her as his mate in life.
As my literary master taught me before I began my ventures into better writing, he noted "Great writing is never written...it is RE-written." You have a wonderful start here. I offer these tiny points as perhaps a way to make it little better. Hope this helps.