This is a really good poem. I like the way you worded it and portrayed the meaning/emotion. I would have to say, which is something I tell many people. You should use periods or commas at the end of some of the sentences. You did a great job of breaking up the actual lines, but not the stanza itself. Commas/Periods/Semi-colons/Colons, all of the punctuation HELPS a poem. Of course it coud very well hurt it, but it has everything to do with the flow. Therefore I suggest reading over the poem, while taking into consideration that punctuation marks means a TINY break in reading (like a syllable in the line). Then add the punctuation where you believe it is needed.
I will say though, the fact that it isn't at the end of the stanzas, breaking them up isn't bad at all. You have a great poem here. I just believe that with a little punctuation it will give it that oomph of perfect flow. Which it's just about there already.