After Hours by Ohcaptainmycaptain1918. This fic is a WIP but it is AMAZING, really, very honestly, all of her fics are amazing. IF you read Stucky fanfiction and you haven't read her fics yet, go check her out on AO3. She is incredible, better than most authors I've ever read (not to mention, her fics are incredibly hot)
*heart breaks and mends all at once* probably the first time anyone has ever taken his metal hand affectionately <<< This gif is all I want in the world. I don't care that it's fake. I can die in peace. Someone has held TWS's left hand.