46. Too Close
Clint was the first to notice. He noticed Natasha would get closer to Steve in battle, and would sit close to him on the couch. He grit his teeth and bore it. He was jealous- that was the only way to put it. Call him petty, but he just didn't like it when other guys got too close to her- even his own teammate.
47. Trouble Brewing
Tony Stark was keenly aware that something was going on under his roof, but he didn't know what. He was a smart guy- that much was proven, but he couldn't quite put his finger on it. When he'd asked JARVIS if anything was unusual, he replied that everything was normal. That made him even more suspicious. Little did Tony know, Natasha had threatened to short the AI's circuits if he ever said anything about what she and Steve were up to.
48. Observations
Bruce Banner was first and foremost a scientist. He believed in the power of the scientific method- the first step of which was to observe. Being quiet gave him a lot of time to watch how things worked or changed, and he noticed a change in Natasha and Steve's relationship right off the bat. They seemed closer now- having a bond that he couldn't quite place. He saw them becoming more protective of each other, and how they never seemed too far apart. He could form dozens upon dozens of theories in his head, but not one ever seemed quite right. Ah, well. He'd figure things out with time.
49. Strange Magic
Thor was still getting used to midguard. It was a strange place the earth. He sometimes heard things he knew couldn't possibly be there- Like sometimes he heard sucking noises from outside Natasha's room. Other times he thought he could hear crying from down the hall and footsteps shortly after. And still yet he heard a child's laughter from somewhere in Stark Tower.
Strange magic- that's what it was.
IMPORTANT A/N: I'm sure your all wondering why there's only four drabbles here- and the answer is simple: in celebration of 50 drabbles, the rest of the Avengers will finally find out about Natasha and Steve's secret. How do you think they'll react?