maybe this one?

http://www.fanfiction.net/s/6832258/1/Who_Toils_Most_to_Go_On

Gabriel is brought before God to answer for all that he has done —for good and for evil. He is given one last chance to redeem himself, a task that ranks among the most important his Father has ever entrusted him with: Sam Winchester. Gabriel is confined to Purgatory —a place as changeable as it is dangerous to those not accustomed to its ways— along with the infant soul of the man who brought down the devil himself, tasked with mending it after its long ordeal in the Cage at the hands of Lucifer and Michael. Sam's work on earth is not yet done, and if Gabriel is to have any chance to return to Heaven and be restored, he must help Sam's soul to heal before Death thrusts it back into Sam's body —which still inhabits the surface of the earth— and in the process, maybe learn to heal himself.

xxx

It's a beautiful story and i adored every word of it, but it's not the story i was looking for. Thank you for the link though!

hm did you find it?

OOO I would love to read that too!

Any chance to read some Sabriel I am all over it!

This is similar, but it's Dean/Gabriel...

The Dangers Of Intimacy (http://aquariell.livejournal.com/6612.html) by aquariell

Is is the lonely man? On fanfiction? Sorry, I don't have the link but here's he details I remember if its it:
Sam runs away after season five and does drugs? And Gabriel finds him and turns him into a baby and raises him as his archangel son. Dean ends up being an angel too. Lemme know!