Buvky is you're best friend. He loves you deeply and he wants to marry you but the problem is you're an lesbian

since you're a lesbian. You and Bucky sometimes kiss for fun. But it leads to bucky falling in love with you even more. You walk into the avengers compound. Bucky excitedly walks over to you and is about to kiss you but when you stop him he looks a bit hurt

Bucky: "what's wrong?"

he asks quietly. The avengers were watching from the couches as suddenly natadha stands up and walks over to you and bucky

Natasha: "she's mine, barnes. You can't kiss her anymore."

Natasha kisses you on the lips infront of Bucky, shattering his heart in million pieces. He looks at you both heartbroken but tries to hide it since he always had such a massive crush on you. The avengers watch amused but couldnt help but think you're hot

Bucky: "congrats..."