Disclaimer: I do not own any of the characters, they belong to Disney.

Author notes: This is a Kigo, if you don't like it RUN now! This is rated M for a reason, mostly because of some mature situations and Shego's language.

English is not my first language so forgive eventual mistakes. If someone wants to be my beta reader PM me.

Chapter 1

Kim Possible could also be defined as the "Perfect Girl".

Ann and James Possible, her parents, were proud of their eldest daughter.

She was a good friend to Ron and Monique and according to her teachers she was an excellent student, among other things, she was the captain of the cheerleading squad.

Besides all this, the seventeen year old Kim was also an international hero, engaged almost daily in foiling the plans of super villains who wanted to take over the world.

Everyone thought that she had no secrets, that she was going to have a bright future in Global Justice, that she was going to marry Ron Stoppable, her sidekick and best friend since pre-k, and that they were going to have two or three children and live a happily ever after.

But they were wrong, they were utterly wrong. In fact, Kim Possible had a secret, a secret guarded preciously for almost a year, a secret that only her best friend since forever knew.

Kim Possible was in love with her enemy.

Which enemy you ask? (I know that nobody is asking because we all know who I'm talking about, but let's go on with the story).

Shego of course. Who else?

Why she fell for her?

In the past year Kim had often asked herself that question and she managed to find her answer.

Shego was the only one who could stand a chance against her in a fight, she brought out the best of her, she was a challenge to do better every time they fought.

Shego was also very beautiful, her hair was black and it looked like silk, her emerald eyes were just as beautiful, made for seduction, her pale green skin was so smooth and exotic that she wanted to touch it every time, feel it under her fingers.

And last but not least, her body was something else. That skin tight cat-suit left little to the imagination, her breast were full, her legs were toned and her ass... women would die for an ass like that... Hell, women would die for her all body!

Kim sighed as she closed the book she was reading, every time she thought of Shego she found it hard to concentrate, and the woman was often on her mind lately.

However Kim knew that her love was hopeless. Even if a month ago, that was the last time she checked, the villainess was single, she doubted she was into women. And even if Shego was actually a lesbian there was always the fact that Kim was the hero and Shego the villain.

This was eating her on the inside. Kim tried to forget Shego, she really did, but she just couldn't.

Ron always consoled her, he didn't judge her when she told him she was in love with Shego, he was always there for her. Since the beginning he had been telling her that she had to confess her feelings, he always remembered her that "Anything is possible for a Possible."

She cling to the fact that the thief didn't have a boyfriend, it gave her hope for a future with her love.

If only I had the courage to ask her out... No Kim what are you thinking?

She scolded herself.

You know she's not that way and you can't forget the fact she's a villain. Why can't I love a boy from school? It'd be so easy...

She was ready to cry over Shego again, like she had done so many times before, but her mother called her for dinner.

"Here you go Kimmie" Ann said as she placed a plate full of food in front of her.

"Thanks" she muttered.

Through dinner she barely touched her food, thoughts of Shego clouded her mind and prevented her from eating.

Obviously Ann knew that something was wrong with her daughter but every time she tried to ask her what it was the younger redhead just shrugged, saying it was nothing important.

After dinner Kim returned to her room, it was too early to go to sleep, so she took a book and began to read, doing her best to get the green-skinned villainess out of her mind.

Not even ten minutes passed when her Kimmunicator went off.

"Hey Wade, what's the sitch?" She asked smiling at the boy.

"Hi Kim. It seems like Drakken and Shego are up to something, they just got back to their latest lair with a stolen device..." he explained.

"I'm on it. Ron? "

"He's on his way there"

"Ride?"

"In ten minutes"

"Thanks Wade, you rock"

She smiled one last time and disconnected the call. She quickly changed into her mission clothes and waited for the ride to arrive.

Okay Possible, you're going to see her soon. Keep calm, you can do anything

Kim knew that Ron would have quickly realized from the look in her eyes that the girl had spent most of the afternoon thinking about Shego, that was happening a lot lately and his best friend always knew how to make her feel better.

"Hi Jason" she greeted the pilot of the helicopter "Thank you for the ride"

"No problem Kim"

"Hey KP!"

She went to sit beside Ron, who immediately noticed the look on her face.

"Kim... you've been thinking about her again, haven't you?" he whispered so that the pilot wouldn't hear their conversation.

She nodded slightly and her eyes watered.

"Why does it have to be so difficult? Why her?!"

By then she was crying softly.

"Shhh... Come here, don't cry" he put an arm around her shoulders "Everything will be alright"

He kissed her head and continued to soothe her 'til she was no longer crying.

"We're almost there" said the pilot preparing for landing.

"Thank you"

They spotted Drakken's lair and infiltrated it through the air vent.

"I'm telling you Shego, this is my greatest plan ever, this is fool proof, I will finally defeat Kim Possible!"

Dr. Drakken was renting as usual and Shego was filing her nails pretending to pay attention to him.

"Dr. D. will you please stop renting about your brilliant plan for just a minute? You're giving me a headache"

"Shego you're so mean! We are an evil family, and you will listen to my plan. This time I will take over the world! Ahahahahah!" he laughed maniacally.

"Think again Drakken!"

Kim Possible dropped from the ceiling and landed softly on her feet in the middle of the room while her sidekick landed on his butt with his pants ripped.

"Oh c'mon Ron!" she sighed.

"KIM POSSIBLE! What are you doing here? And what is your name again Buffoon?"Drakken yelled.

"It's Ron Stoppable! Is that so hard to remember? We see you once or twice a week!" he sighed exasperated.

"Please Dr. D. stop sounding surprised. It happens at least once a week that Kimmie arrives and foils your plans"

Shego got up from her spot on the couch and assumed a fighting stance.

"Ron go get the device from Drakken" Kim said while assuming a fighting stance of her own.

Ron ran towards Drakken and the two began to wrestle against each other.

"Nice to see you again Princess"

Their battle began. Actually it was more a dance than a battle, the two women moved in perfect synchronization with each other, neither managing to land a blow on the other's body. All the while they kept taunting the other.

"What is it Shego? You're not feeling well? Or are you just getting old?" the redhead asked as she threw the thief to the ground and straddled her hips "What are you now? Something like forty?" she smirked.

"Yeah I'm sure you'd love to beat me but I'm afraid I'm not ready to lose to you yet Pumpkin, now get off of me"

She threw Kim off of her and the two began struggling on the ground, unaware of what was happening around them.

"Dr. Drakken where's Shego? What is happening in here?" asked a young man who had just entered the room.

He was about twenty-five, he was tanned, his hair was blonde and short, his eyes were blue. You could see his abs through the thin T-shirt he was wearing. He was the kind of boy you could meet at the beach surfing, the kind of boy every girl could fall for. He also had a slight Spanish accent.

"KP I've got the device!" Ron shouted "And who are you?" He asked the young man.

"Diego, what are you doing here?" asked Drakken.

"I stopped by to say hello, you know where Shego is?"

"She's over there"

Suddenly Kim and Shego stopped fighting and the villainess noticed the man by the door.

"KP I have the device!" Ron repeated.

"Good job Ron, we can go" then she too noticed the new person in the room "Who are you?" she asked.

Ron skipped by her side while calling Wade for a ride back.

Shego walked where Diego was and he put an arm around her waist, bringing her close to his body.

"Princess meet Diego" Shego said "My boyfriend"

Kim's heart shattered into a thousand pieces.

A / N: Here's the first chapter, I hope you liked it. Please let me know, I really love reviews. If you have some suggestions write them in a review or PM me and I'll see what I can do!