Steve was nervous. He kept bouncing his leg up and down as the team waited for the jet to land. His heart was beating disturbingly fast and his palms were sweaty. A tiny box was burning a hole into his pocket, reminding him of the crazy mission he was about to go on. One that could change his entire life. 

Natasha noticed and decided to not so subtly nudge him. "Steve, you doing okay?" She watched as Captain America jumped, becoming still like a deer caught in headlights. It would have been funny, had it not been for the terrified look on his face, skin pale and eyes wide. 

Clint heard them, took one look at Steve, and placed a hand comfortingly on his shoulder. "Dude, we just got back from a mission. Why do you look like you are about to go back out on another?" 

Steve didn't answer then and thanked every god he could think of when the jet opened up, giving him a free path to the Avengers tower. The other occupants of the jet gave each other questioning glances. 

Bruce and Thor simply dismissed it, thinking it was the mission they just went on that got to their leader. Clint was suspicious but ultimately dropped it in favor of getting some well-needed rest. 

Natasha, on the other hand, wanted to follow. She hated not knowing what was up with her team-mates and was worried about her friend. She made to get up but watched from the corner of her eye as the last person onboard got up in hurry, running to catch up with Steve, and she relaxed back down, knowing Steve was in good hands. 

Tony ran, letting the armor fall to the floor as he tried to catch up with his insanely fast boyfriend. He had no idea what was wrong, but he wanted to be there for him in whatever way he could. He cared for Steve deeply and was damn well going to show it. 

Steve ran to their shared bedroom, closing the door and throwing the top half of his suit of, the box secure in the inner pocket, before flinging himself on the bed. 

Not a second sooner Tony busted in, panting from the run. He saw Steve on the bed and let out a breath, following his lover and cuddling up to his side, settling his head on the blond's chest. 

Steve sighed, hugging the smaller man close. He always wondered how Tony always managed to do just the right thing for Steve to relax. He continued to hug Tony, bringing his hand up to the brown, styled hair, raking his fingers through it. 

Tony closed his eyes, soaking up the feeling of his lovers' warm hands. Minutes passed with the two men simply layin together, enjoying the other's presence. But Tony knew it couldn't last. 

"Steve, what's wrong? You just ran as soon as the jet touched down." 

Steve sighed, letting Tony go before sitting up, crossing his legs in the bed. Tony repeated the motion, the two now face to face.

"Tony, you know I love you right? More than anything?" He tried to keep calm, speaking softly in order for his puls to slow down so he could actually hear something else than the pounding of his heart. 

"Yeah? Steve, what is this about? You're starting to scare me." Tony was getting worried. Steve sounded afraid, and he was never afraid when it came to their relationship. But if it wasn't about them, what could it be? "Steve?" Tony asked slowly, lowering his gaze to his hands. If Steve wasn't scared about their relationship, and he wanted Tony to know he loved him, there could only be one logical explanation. "Are ... Are you breaking up with me? Is this what this is?" Tears were starting to gather in his eyes. 

Steve went still, his brain freezing up. Breaking up? Why would Tony think ... oh!

Tony saw the reaction Steve gave to the question and started to really cry now, forgetting for a second that he was Tony Stark, billionaire genius and superhero Iron Man. Now he was just Tony, ex-boyfriend to Steve fricking Roger. "That's it isn't it? You are breaking up with me and wanted me to have a few moments with you before you told me. I get it. I'll just let myself out then." 

He started to get up, walking slowly to the door, tears running down his cheeks silently. 

Steve could only watch for a second before his brain caught up with him. "WAIT!" He shouted, stumbling out of the bed, snatching up his top from the floor and digging around in it. Tony stopped, turning and facing Steve, tears running down his face. 

Steve continued his search for a second before pulling out his prize with an 'aha!' He then proceeded to trip over himself trying to reach Tony. He ended up on one knee without knowing it, and then simply went with it, popping open the box and showing of the content within. 

Tony gasped softly, wiping his tears as new ones began to appear. In the box a simple gold band sat, decorated with five small, red, blue and white diamonds. Nothing fancy or flashy, nothing too expensive or big. Just the thing Tony could wear and still work like he did every day in the garage. 

"Tony, I love you. I love you so much and I never want to be apart from you. I'm sorry I seemed disturbed on the mission. I picked it up right before we left, and the entire time it had been lying in my pocket. I wanted to make it romantic but didn't know how to make it perfect for you, because you deserve only the best, and I thought that if you didn't like it enough that you would say no. So I spent forever thinking about it, and I planned to just lay down for a few hours to think about it, but now I see that the best thing I could do was just to ask you because with everything going on in our lives, we deserve some simple moments. So," 

He stopped for a second to breathe before continuing, visibly calmer. "I ask you now, Antony Stark, after five years of knowing each other and three years dating, will you  marry me, your cap-sickle?"

Tony stared for a full minute, taking in the sigh of the ring and Steve, before breaking down. He fell to his knees, tears pouring out as he cried and cried. 

Steve, already freaking out from before, rushed over to hug him. "Tony? Are you okay? Too much?" He kept hugging the man, talking sweet words in his ear and shushing him.

Tony soon calmed down enough to look at Steve. He managed a small smile. "I didn't think I would ever end up getting married. I was prepared for a life alone." 

Steve looked crestfallen. "Oh, so you don't want to marry me."

Tony laughed, flinging his arms around the blond. "You dummy. Yes, I want to marry you. Yes Steve, God yes!" 

The two laughed together for a moment before getting the ring out of the box. Steve dramatically placed the ring onto Tony's finger, and Tony kissed Steve passionately in return. They stayed on the floor a while longer, kissing and hugging each other.

Hours later the two left their room, making their way to the living room. Natasha noticed first. "If you guys are celebrating tonight, keep it down? My room is right across the hall." 

Bruce was the next to spot it and simply smiled at the couple before going back to his book. 

Clint and Thor were last, both only getting it when Clint made a comment about how they acted like a married couple and Tony replied with 'not yet.'