Hey Jealousy

“Captain America doesn’t get to sleep around, huh?” one of the military guys hollered.(“Walker. John Walker,” he had introduced himself a while back.)“Shut up, man,” Sam muttered, quickly glancing at Bucky to see his reaction. He could tell them about Bucky but… he probably should tell Bucky about Bucky first."Oh! Ohhh! He’s trying not to blush!” the guy called Hoskins laughed as he slapped Sam on the back. “What are you, fourteen?” Sam rolled his eyes before turning towards Walker, “It’s not like you all get to go on a lot of dates either. Been there, done that, remember?”Walker let out a laugh. “That’s only if you have very strict preferences,” he winked at Sam, “I believe…” he turned towards Bucky to directly catch his eye, “We all need to be a bit more… flexible.”OR, Sam has a crush on Bucky and everyone knows. So Bucky probably knows too, right? Probably. Obviously. Plus Sam's pretty sure Bucky likes him back as well. Which is why things take a sharp turn when John Fucking Walker enters the picture and starts flirting with Bucky.Sam doesn't... take it well, to put it politely. To put it bluntly: He majestically puts his foot in his mouth and ends up hurting Bucky.