Hi, this story will mainly cover The Avengers first movie but will continue on through Thor 2. I really wanted Jane to be in the Avengers movie so I am making her a big part of it in this story. Hope you enjoy and reviews are always appreciated.

A Promise: Chapter 1

When I ended my relationship with Donald Blake I thought that pain I experienced would be the worst of my life. I knew it was the right decision but that didn't make my love for him any less. He did not fight me which, thankfully, made it easier to leave him. His devotion to his patients did not extend to me and the apathy over our break up was the final push. I accepted a position in New Mexico, a chance to work on my research and recover from my broken heart in peace. I was able to join teams with my mentor, Dr. Eric Selvig, a man who taught me everything I know about astrophysics and who kept me together after my father died. He was there for me after Donald.

He was there for me after Thor.

The Thunder God from Asgard. The wielder of mjolnir. The man I hit with my car…twice. The man I have come to care for more than anyone I have ever known. And I only knew him for a few weeks. There was just something about him, besides the crazy; though maybe it was the crazy that first drew me to him. There was something different about him, something that drove me to find out more about him. We stayed up late those nights, talking about his world and mine and all the untold secrets of the universe. He was the answer to my research…He was the answer to my broken heart. His smile, his beautiful blue eyes…that voice! His shirtless chest came instantly to mind and I could not help the blush that tinged my cheeks. I still have the picture of it that Darcy managed to take when he wasn't looking. I was hooked from the moment I saw him lying on the ground after being pummeled by my van. For the first time in a long time I felt that spark that had been missing since Donald.

Then he left with a promise to return, for me. But that was almost a year ago. The pain of his absence had not lessened over the long days of burying myself in my work. Each night up I stare up at the stars and wonder if he is looking down on me, wishing he could be here as much as I want him here.

Sometimes I think I am losing my mind. I barely knew him and yet I am pining over him like some adolescent school girl. I can't help but wonder what is keeping him. Maybe…my feelings are one-sided.

No. I stop from going down that road again. I walk into the gym and begin working on the exercises Natasha showed me. They have become a welcomed stress reliever and I am actually getting pretty good at hand-to-hand combat. Not that I'll ever need to use it; I am a scientist after all. My greatest weapon is my mind; but it's still a nice way to work off my frustration.

Surely he felt something for me too. He promised he would come back, just for me. I could feel the passion in his kiss, in the way he held me tight against him.

What if it was just my imagination?

I spin and land a heavy kick against the bag as hard as I can manage. The resounding thud is oddly satisfying. I push my doubts far down into my subconscious where it can only haunt me in my dreams. I will find him; I repeat my mantra over and over. My determination has not waned. I will not give up on him yet.

Across the room her phone rang. Jane Foster grabbed a towel and wiped her face before answering it.

"Hello?"

"Doctor Foster, we need you to return to Headquarters," her boss, Director Fury demanded from the other end. She was still trying to get used to working for him. S.H.I.E.L.D had given her leeway on her research but when Fury wanted something done, you were expected to do it, no questions asked. Jane just did not operate that way.

"You just sent me out here to keep working on the portal," she complained. "And now you want me to come back in? Could you please just make up your mind."

"The Tesseract has been taken," he responded, his voice packed with tension.

Jane's heart stopped beating momentarily. The Tesseract was her only hope of getting to Thor again.

"By who?" She whispered.

"Loki, from Asgard."

Jane collapsed into the nearest chair. Thor's brother, the one who had nearly killed him almost a year prior, had come to Earth and stolen the Tesseract from S.H.I.E.L.D, from her. This was not a coincidence.

"He has taken Dr. Selvig and several other agents with him. Loki has them under some sort of…spell."

She saw red at the Director's words. Her fingers curled and she itched to hit something. An indescribable rage filled her chest and she responded in a tight voice,

"I'm on my way."