I really wish my German was good enough to read this without having to rely on googletranslator, but sadly I'm afraid I'm missing all the nuances of your writing. What I love tho: Roman lying there, tracing his hand over the contours of Marc's body without actually touching him, then finally letting one finger stretch out... it's such a beautiful image of the distance between the two of them, as is this deep sleep that Marc enjoys while Roman is torn apart. Roman's paralysis is so keen here -- that paralysis that freezes him when he thinks of life without Marc so perfectly describes what he was going through on Show, when he couldn't make a decision, but that was never explicit there; here you've brought it out so perfectly, with his imaginings of his future in Hamburg, perfect except that Deniz is absent.
And the ending. *sniffles* Oh Roman. This is so painful, this knowledge that he's finally made a decision, that this is the very last time... those moments are so bittersweet. Thank you, Mystery Author, for giving this story the ending it deserved! *clink*