Clenched Teeth
It was only after your first year anniversary she decided maybe it was finally safe to move in together. Of course you both knew the world wasn't exactly still free from trouble, and maybe one day someone would find out what you really meant to Natasha and use you against her. And she knew that she could only protect you from so little but it was worth it when she woke up at 5:30 AM sharp for work and got to see you peacefully asleep in her arms. It was worth it when she got to see you dancing in your underwear in an oversize shirt singing to yourself as you made a breakfast for the two of you on weekends. It was worth it when you got to watch your favorite cartoon late in bed and just cuddling for hours. After the Red Room, Natasha wasn't really sure if anything was worth keeping. Things would come and go, and eventually, you would somehow. So she kept you close until that awful moment showed up. As you slowly drifted off into sleep, Natasha sat up against the bed frame and ran her fingers down your hair. In a sense it relaxed her and reminded that even if she was the monster her life made her, you and your love for her was not a dream. And that was irreplaceable. Natasha looked at your face to make sure you had really fallen asleep to let out stuff she didn't dare say if you were awake. She knew she could trust you, but the night you slept talk for the first time and she responded only for you to give a snore in reply, it became a habit. Sometimes she would talk about a mission she just finished or how her day was shaping up her new teammates but today was different. Through clenched teeth Natasha began to spill all of her love she would barely confess. She started talking about her worse fears and began to choke up. Tears quietly streamed down her face and for once the Black Widow was too slow. Though it was dark you pulled her down to your level and she stared at you in shock.
"Don't worry Nat, I didn't hear anything. But I could hear your voice in my dream and I was just worried I was in a coma or something." You nuzzled your face into her neck, "Also I know you talk to me while I'm asleep to let out your problems in private. That's why I go to sleep early. I love you." And with a kiss to her neck, you closed your eyes and went back to dreamland.
Natasha smiled to herself knowing in a world full of darkness you were her midnight sun.