But wait, there’s more. Because apparently I can’t not do worldbuilding in the shower.
It’s not like Steve and Bucky have never thought about it before, but Steve is his CO. It’s not allowed. They’re very professional.
Of course, Steve offers, repeatedly, to put the kibosh on the whole thing, but Bucky refuses to let him scuttle the mission. Best case, they make themselves very unpopular with the only people they have contact with while waiting for rescue in a distinctly unhospitable environment. Worst case…probably shouldn’t dwell on that.
And it’s not that Bucky’s trying to be disobedient, either. It’s just that military protocol is really really not the same as how the locals expect him to behave, and do they honestly expect him to put that on, sir? (Yes. Yes they do.)
So they are rescued, eventually, after having a lot of public kinky sex, and the mining agreements are hammered out, and it turns out that, given that the colony never formally renounced the Allies (see what I did there) when it lost contact, their marriage rites are legally binding.
Captain Carter (Steve is also a captain, but he’s Space Army and she’s Space Navy so she waaay outranks him) asks them separately if they can still work together, then, when they say yes, gives them the civil divorce paperwork. Steve skips chow and he’s sitting in his quarters staring at the papers – she printed it, that’s how serious this is – when Bucky knocks. Steve’s expecting him to have his copy of the papers, which he does, but in the other hand he has the choke collar.
“I checked the regs, sir,” Bucky says. “We, um. We don’t have to sign.”
Steve stares at him for just a minute, then yanks him in through the door and kisses him hard on the mouth.
(AND THEN THEY STAY MARRIED AND GET TO LIVE HAPPILY AND SEXILY EVER AFTER AND KEEP WORKING TOGETHER AND EVENTUALLY THEY RETIRE TO RAISE SPACE GOLDEN RETRIEVERS OR SOMETHING THE END)