Sad, but beautifully written. The last few lines really touched me.
Write on, because you've got what it takes.

While punctuation can be a personal preference, sometimes, it would be nice to use punctuation to give your piece a more professional look. Even without punctuation, I didn’t find it difficult to spot the places there is meant to be a pause, but it would certainly help out your readers to put in punctuation.

I do like some phrases that you put on a line by itself, such as “Not for you / And not for me” and “Not again / Never again” because by doing so, you put emphasis on those phrases which stresses both the need to single them out and to stress the emotion behind each of those words to give your poem a more rounded and complete feel. Very nice.

You also have some lovely (and strong) imagery in this piece, especially towards the end. The imagery really complements the emotions behind the poem very well. I especially liked the line, “Drop a rose for the memories” because that simple action speaks volumes after finding out the emotions of the speaker earlier in the poem.

I do have a slight problem with some line breaks and phrasing though:
“I told you / Again and again” – having the latter line by itself seems a bit awkward and causes the flow to be slightly interrupted. I would suggest merging these two lines into one to make it flow better and easier to read.
“That we could turn it around / That it wasn’t too late” – I think it would sound better if you had these two lines in present tense: “We can turn it around – it’s not too late;” Like I said before, your poem reads OK without punctuation, but punctuation will only work to enhance it, which is why I included punctuation in my suggestion.
“Not for you / And not for me.” – I edited in a period at the end, but other than that, I would keep these two lines as is for the reasons I have stated earlier.
“You never listened; / Not once.” – I edited in a semi-colon and a period for the same reason as above.
“I told you that I couldn’t keep trying / To save a lost cause – / To watch you run yourself into the ground.” – I added a dash to the end of the second line because you’re continuing the thought on the next line. I like the emphasis on the first line though.
“A promise for me / A promise to you” – I’m a little iffy on this one mainly because of the “And”. Use your best judgment on this one – sorry!
“So I’ll just leave the stone half-engraved, / Drop a rose for the memories / and walk away - / Just like I said I would.” – I edited the third line and the last line as well as inserted some punctuation here and there.

By the very end of this poem, I feel that the title is very misleading. I was under the impression that this is a poem whose mission is to deliver the message that it really isn’t too late to whomever this is dedicated to. But it looks like the speaker simply gives up towards the end. What you can do to change this is to add a few more lines that portray the emotion or thought that gives people the feeling that even though the speaker has left, they are still waiting for this person they’re trying to “save”, if you get what I mean. Don’t get me wrong, your ending is very nice, but it doesn’t complement the title as well as I had hoped.

If there is anything I said that you did not like or feel that is too harsh, please know that I only mean well and I also wish to help you improve your writing. I sincerely hope Jesse and Chris will get a chance to read this heartwarming poem and consider the message you have embedded in here. Best of luck to you all.

-silv3rdr34ms
PS: If you’re bored or you’re looking for quality reviews, please visit the Review Game Forum and its various review opportunities! There is a link in my profile.