Disclaimer: Don't own anyone. Well, I guess I own my husband since I paid for his green card... :)

Time: After 1st movie.

A/N: Got his idea from listening to Orianthi's "According to You", Backstreet Boys' (yes, I said BSB!) "More Than That", and NSYNC's (them too) "I Thought She Knew"... May throw some lyrics at you... Maybe not :) Again, slightly a/u- nothing crazy though!

Dana Scully was crying into her pillow. She was trying to fall asleep but found herself crying. Over him. Again. He had betrayed her. The burning ache in her chest refused to go away. She cursed herself for being so childish. She was an FBI agent, after all, and he was just her partner. So, why did she feel this way. Why did his words sting her still.

4 hours earlier...

Scully was pacing back and forth in Mulder's sitting room. She was waiting for him to get home. She was going over what she wanted to say to him over and over in her head. She was nervous.

The lock clicked and Mulder stepped into his apartment, not surprised to see Scully there.

"I don't want to hear it," he warned her.

"Mulder, please just hear me out," she pleaded.

He tossed his keys onto his desk and turned to look at her, crossing his arms over his chest.

She took that as a sign that he was listening. "I don't trust her," she stated.

"You don't know her," he pointed out.

"I know," she admitted. "But I think that you are letting your past with her cloud your judgment!" she added.

"Get on with it! Just say what you came to say!"

Scully could tell that he was getting angry. She couldn't understand why he was so protective of Diana.

"I think what she's telling you is wrong. And I think that she's doing it purposely."

Mulder scoffed at her. "What makes you so sure? Where's your much loved proof?" he asked, bitingly.

He had never talked to her like this before. It hurt, but she pressed on.

"Well, it's really the lack of proof, Mulder. What has she been doing for the past few years? There is no record of her anywhere. It's like she disappeared! And now she has reappeared when you- we- are so close to finding some sort of truth!"

"Look, Scully, she was there with me when I found the x-files. She has more right over them than you do!" he argued with her, the same edginess in his voice.

"How can you say that to me? I have been in the x-files myself. My abduction. My cancer. Not even you have been in the x-files as much as I have. I think that I now have more reason to fight than you do! "

"I doubt that very much. You're so damn single-minded," he told her, stepping towards her, closing the gap between them. He looked down into her eyes. "You go through life without opening your eyes. You wouldn't know where to look for a fight!"

"What? Because I don't jump at the chance to chase what may or may not be alien?! Because I'm not as fucking gullible as you!" she yelled at him, losing her temper.

Mulder was angry. She pushed to far. "No. Because you refuse to see what is in front of you! All of your damn proof! Some things can't and aren't meant to be proven! You just have to believe. And that's what Diana does. She believes. And it's a breath of fresh air compared to you being a bitch and your incessant nagging on about proof!"

Scully looked away. She tried hard to fight the tears that wanted form in her eyes. "You told me that I was the one who kept you honest," she reminded him. "Right before you tried to kiss me," she added, quietly, looking into his eyes.

Mulder scoffed, looking away from her. "Well, that was a mistake. I was wrong. You have done nothing but hold me back," he told her, spitefully.

The next thing Scully felt was the stinging of her hand... right after she slapped Mulder across the face.

"You're an asshole!" she spat at him.

Scully left his apartment, slamming the door behind her. Two things were for certain. First, any trust that had been built up between them had been demolished by his single comment. She was, after all, just trying to help him. As usual. Secondly, work was going to really suck tomorrow!

A/N: Not really important about what Diana did. Just needed them to fight :)