youre Bucky's best friend and youre the only one he trust in his life. He doesn't even trust his wife, Natasha. You and Bucjy do everything together and sometimes even change in the same room since you guys are that comfortable with each other and you guys call each other pet names

you're laying naked in bed with bucky, he has one arm around you while you two "friendly" kiss. A few minutes later nat storms in with an anrgy look

"Seriously!? I knew you guys were close but that you two are naked and kissing!? WHAT THE FUCK!?"

Bucky rolls his eyes. Bucky lays you down next to him and kisses you're cheek then turns to nat

"Make out with her and you'll see."

yours and Nat's eyes widen and bucky looks serious. Bucky stands up an undresses nat. He lays back next to you as natasha and her naked body slowly moves on top of you're naked one. She lays her body down on yours and slowly kisses you're lips. The moment she lays her lips on youre she moans and immediately starts to make out with you passionately and needy