Bucky turning Steve into a puddle by gushing about his cute waist and beautiful pecs/boobs. Maybe abo with Steve getting so wet when Bucky starts lavishing attention to his nipples. Bucky telling him to come just from that and of course Steve does.
I went with canon!Stucky, if that’s okay :P
Steve hated going shopping.
When he was small and frail, it was because people would think they could trample on him and the crowds made him feel woozy. Now, the crowds just made him feel uncomfortable. People staring at him, he always worried about how he looked. At least when he was small, he knew that was why. But when they look at him now? He felt insecure, like he had something on his skin, like he was in the way.
But then when Bucky came back and he saw how beefy Bucky was, because oh my god have you seen him, Sam?! He doesn’t feel out of place. Bucky was thick everywhere, his thighs, his waist, his shoulders and chest. Despite Steve’s serum, Bucky was larger than him. Sure, they were level-wise, by height anyway, but while Steve was muscle packed into a tight body, Bucky was just...mouth watering large.
Next to Bucky, Steve felt smaller. He didn’t feel out of place or in the way. Because he had Bucky’s hand on the small of his back guiding him, or Bucky’s arm around his waist.
“I don’t want to,” Steve pouted, standing with Bucky in the clothes department of some store, “can’t I just wear what I have?”
“Baby,” Bucky grinned, picking out clothes he thought would look good on his sweetheart, “you can’t wear the same clothes all the time. It’s a gala and Pepper wants everyone dressed to the nines.”
Steve sighed and sank down in one of the chairs the store had and watched as Bucky went around choosing Steve’s sizes, “Buck…”
“Yeah, Stevie?” Bucky replied, grabbing some trousers to go with the shirt he had in his hands.
“Do you think…I’m ugly?” Steve asked, too ashamed to look up at Bucky’s face. The minute those words left his lips, Bucky was over in a second, crouching down in front of him.
“Baby, look at me,” Bucky said firmly, but gently, “sweetheart, look at me.”
But Steve screwed his eyes shut. He felt so stupid. Pathetic. Crying over something as small as this? What the hell was wrong with him? He was Captain America for god sake!
“Baby doll,” Bucky whispered, cupping Steve’s face, wiping away the tears there, “you’re beautiful. I love the bright blue of your eyes, the way I can see a whole storm brewin’ in them when you’re angry, or the sun when you’re happy.”
He kissed Steve’s closed eyes.
“I love your adorable little freckles, the red of your lips. I love the way your soft hair feels against my chest when you sleep.”
He kissed Steve’s cheeks, forehead, lips and head.
“I swear to God, you got the prettiest set of tits I’ve ever seen, and you’re cute little waist, so tiny and compact, drives me wild, you know that?”
He growled in Steve’s ear and wrapped an arm around his waist and squeezed.
“I love everythin’ about you. The way you smile. Your laugh. That big mind of yours. I love you. And you are mine, doll. My baby boy, and he’s beautiful.”
Steve finally opened his eyes, tears falling freely down his cheeks. He made a small noise and Bucky knew he wanted a hug. Steve melted into his arms and hid his face in Bucky’s neck.
“I gotcha, darlin’. I gotcha.” Bucky closed his eyes and cursed whoever had made Steve feel like this. If there was one thing he was certain of in this stupid world, it was that Steve was precious. And no one lived to see the sunrise if they so much as made Steve sad.