There is so much dark poetry that a poem that is warm and glowing is a rarity and should be enjoyed,
On that level your poem is a gem, beautiful simplistic and warm. I can not really judge because I drag up all kinds of dark wounded images easily but to write something beautiful becomes a trial. However that is me not you, if this was your first attempt at writing this type of poetry I would be kind but I have read many of your poems, and I have to echo furlong's thoughts.
If I maybe so bold as to make some suggestions,
" In a song, suddenly
there is you
directing the dance."
Personally I found that the opening did not grab me, it sets up the rest of the verse but it does have the rhythm of the rest of the verse and still it seems somewhat separate to the rest of the verse. I would almost suggest opening with
" Swiftly like a rising curtain
locked together swaying"
A much more powerful and beautiful image. Of course that would upset the structure of the poem,
Maybe moving the opening line to the end of the verse,
"still lit and lanquid
and poised forever in grace..
Directing it dance
there was you."
" as a flash of color stirs
then flows across my bare shoulder"
Favourite image in the poem, beautiful.
and I feel maybe the poem should end on that high,
" where I was cold
and now am warm"
eek I know that you are working with short sentences
so creating images can be quite difficult but I just feel those lines were an anti climax.
I hope I don't sound to forward or too critical but I know that you can give this the Martie magic.