Disclaimer: To my great regret, I don't own CSI, the Characters or any of the songs mentioned in the story. I do however own all the mistakes.

A/N: Just something I though of one night. Doesn't really fit into any time frame of the series. Hope you enjoy it and please review. Thanks ;) Enjoy.

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Technically, Greg knew he wasn't supposed to know of Grissom and Sara's relationship. But he also knew that they couldn't have expected to keep it secret for very long working with people trained to uncover secrets and pick up on all details.

How do I tell her? he asked himself as she sat down on a chair looking at him inquisitively. She has to know. I can't believe Grissom would do this.

"Sara…" He looked at her and felt the anger towards Grissom burn his insides.

"Greg…I have to get back to work…" She made to stand up and he stood right in front of her.

"Sara…I'm sorry." He handed her the report "I analysed, and double checked the results. There's your vic and many other men…but there's also…"

She cut him off, a tear falling down her cheek "Grissom…" The name came out in no more than a whisper.

Greg tried to pull her into a hug but she simply pushed him away and ran into the locker room. She emerged seconds later with her bag, bumping into Catherine and leaving without another word.

"What bit her?" Asked Catherine as she walked into the break room.

"Grissom." Said Greg between gritted teeth, fists forming at his sides "He cheated on her."

Catherine's head sprang and she stared at him "What?!"

"I ran DNA samples on all the swabs Sara got from Lady Heather's bed. Grissom's DNA was there."

"Oh, Greg. Everyone knows Grissom and Heather have a history."

"This isn't history, Cath. The semen stain with Grissom's DNA was the freshest." He looked angrier then Catherine had ever seen him.

"Oh…how's Sara?"

"How do you think she is?! That…" He didn't finish, he simply stormed out of the break room and towards Grissom's office.

"Greg! Where are…" Catherine realised where the young CSI was going to do and started running after him.

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"You son of a bitch" were the words that made Grissom look up from his book.

"Excuse me?" He looked blankly at Greg who was now standing over his desk looking ready to pound him.

"How could you do it? How could you hurt her? She waited for you so long. I…" He raised his fist to punch the supervisor but was held back by Catherine.

"Greg!" She pulled him back and kicked him out of the room locking the door behind him.

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"Wow, Greggo…what's going on?" Asked Nick as he and Warrick walked by.

"Grissom." Was all Greg could say, anger still clouding his judgment.

"What about him?" Asked Warrick as he and Nick stood next to the fuming CSI.

"He cheated on Sara. With Lady Heather."

"What?!" Was all both men could say before joining Nick in staring at the door, anger bubbling in all their systems.

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"You care to explain this?" Asked Catherine as she shoved the DNA report in front of Grissom.

"Oh…" Was all he could say before sitting back in his chair, passing a hand across his face.

"'oh'?! what the hell is that supposed to mean, Grissom? You know what, I can't believe you! I should have let Greg beat you senseless." She sat down angrily in the chair opposite his desk.

"You probably should have…I was an idiot!" He spoke calmly removing his glasses "I…Sara said…she said it wasn't working. Us. I slept on the couch. I wasn't thinking straight, and Heather was there." He took a deep breath and looked at the ceiling.

"She said you were over?" Catherine asked, her voice calming down.

"Not in those words, but her attitude over the past month said as much." He looked at Catherine "I honestly don't know what to do."

"Well…there isn't much you can do. You can't take back your actions. She's hurting right now, but you have to talk to her. Find out why she's been so distant this month, ask her for forgiveness and hope she accepts. This isn't you Gil. You don't do these things."

He merely sighed "You think it's safe for me to go…or is Greg still standing outside?"

She smiled weakly and got up, opened the door and walked out.

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"So?" Was all any of the three very angry men said.

"Lay back guys. Let 'em work this out." Catherine motioned with her hands for them to walk away and a few seconds later, reluctantly, they did.

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Opening the door to his house, Grissom noticed the complete darkness that had settled. However, unlike the day before, the house wasn't in silence.

With a knot in his stomach and his heart tightening in his chest, Grissom approached the bedroom.

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Lying on the bed, Sara clasped the pillow and wept. She sobbed for hours. She blamed herself for all this. Damn! Why was I so stupid?! She didn't think Grissom would have cheated if it wasn't for her. She'd told him it wasn't going to work. She'd pushed him away. He'd done what he thought she wanted, he'd moved on. But it isn't what I want! She clasped the pillow tighter letting her tears soak the soft white fabric I need him here, especially now. He's not like my father. He'd be great. But he's Grissom. He hates change. I had to push him away. It would be worse if this happened later. She couldn't handle all the feelings. She'd pushed him away, she knew there was a big change coming and knowing Grissom, she knew he couldn't handle change. It had taken him more then six years to admit his feelings for her; he wouldn't be able to adjust to this in such a short space of time as six months.

"Sara?" Came a voice from the door way.

Without looking up, she said "Go away"

Standing in the door way, Grissom regretted his actions more than he'd ever regretted anything.

"Sara…please…" Grissom was pleading now.

No. she thought it was my fault, but if he was capable of moving on so quickly, then I don't want him back. He didn't even fight for me, for us.

"Go away, Grissom!" She looked up now and registered the hurt on his face "Get out!"

She threw the pillow at him but it merely fell to the floor a few feet from the bed. He moved towards her and bent over to place a hand on her back.

"Don't touch me!" She rolled away from him.

She wanted him with her, she wanted to feel his touch. But those hands had touched Heather. Those lips had touched Heather. There was nothing she could do to forget it. He'd replaced her mere hours after their conversation. She couldn't look at him.

"I mean it! Get out!"

This time Grissom knew she was serious. He stood up and looking back one last time, walked out the door and out the house.

Alone again, Sara started succumbed to her misery once more. There was no stopping the cascade of tears.

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Sitting in her car, Catherine watched as Grissom exited the building, got in his car and drove off. She wasn't sure if what she was going to do was the best idea, but she had to talk to Sara. She'd seen those two fall in love over the years and wasn't going to let this tare them apart.

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Hearing the door bell, Sara groaned into the pillow and walked over whipping her tears. If it's Grissom, I'm not opening she thought as she approached the door.

"Oh…Cath, come in." She said opening the door and trying to hide her tears.

"Sara…" Catherine's voice was sympathetic and she pulled Sara into a hug before she could say anything else "Tell me what's wrong"

Sara tried to hold back the tears but couldn't. "I just…I thought…he took so long to admit he loved me, Cath. He's still really private, I got scared. I'm pregnant and I didn't want my family to end up like my parents. I didn't want to hate him. I didn't…"

"Wow, wow, wow." Interrupted Catherine holding Sara with her hands on her shoulders examining her face. "You're pregnant?"

Sara merely nodded.

"Why didn't you tell him? He has no idea. Is that why you got scared?"

Sara nodded "I wasn't sure he'd want this."

"Oh, Sara. Gil is a lot of things, he's secretive, private, but he loves you. He loves you so much he was going to let Greg beat him over what he did. I think he'd beat himself if he could. Sara, he made a mistake, he loves you and he was confused. Forgive him, if not for you, then for your baby."

Sara tried to smile faintly "I want to Catherine. I really do. But he slept with her; he slept with her when I was mere yards away. He didn't care, he saw me get the sheets and didn't try to stop me. I can't handle him. I did push him away but he didn't fight to come back."

Catherine nodded "Fine. What are you going to do though?"

Sara sighed and walked over to the couch. "Can you get me a leave of absence? I'm not going to ask him for it because he'll ask too many questions and frankly, I don't want to talk to him."

"Sure…how long?" Catherine sat down next to her.

"I don't know, six months? After that, I'll have maternity leave and I think it will be long enough to get my head straight."

Catherine nodded "Alright. But don't wait six months to talk to him."

Sara smiled weakly but nodded.

"Can I get you anything?" Catherine asked looking around.

"No, thanks Cath. You've already been enough help."

Catherine nodded and walked to the door "You don't have to come in tomorrow, if you don't want to. I'll see you and call me if you need anything."

Sara smiled and Catherine left.

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The next day at the lab was awquard. Grissom didn't take on any case and simply stayed in his office; whenever he came out, he was target of cold glares from his co-workers. Catherine decided to keep her distance, but by the end of shift, she couldn't hold on any longer. She had to talk to him.

"Grissom?" She asked opening the door slightly.

"Catherine, come in." He sounded distant.

"Are you really just going to stay here, locked up and not fight for her?" Catherine asked sitting down opposite him.

"What's the point? She told me it wasn't working, then she pushed me away and now she doesn't want me back. She even took a leave of absence for six months" he held up the letter on his desk "she doesn't want to see me."

"Well…Gil, I suggest you do something. You waited so long to have her…don't let it go. Grissom, believe me, if you don't tell her how you feel now, you'll regret it later."

"I'll regret it? I already regret it."

"Believe me, Gil. You'll regret it more later."

He sighed "What can I do?"

"Well, I don't know, write her a letter, write her name in the sky, anything you can. You don't want her to go anymore than she wants to leave you. Just show her you're willing to fight."

Grissom merely nodded and to indicate he wanted to be alone, picked up his book.

Catherine sighed and walked out. Will he do it? She thought, hoping Grissom would at least fight for the family he didn't know he had.

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That night, in his stingy hotel room, Grissom took Catherine's advice. It won't change things, but it might help. He sealed the envelope and set out to deliver it. He wasn't going to wait for the post to deliver it; it could be too late when they did. He would drive over there and place it in her mail box.

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Thanks for reading, Chapter 4

Please, please, please, please, please review.

(yes, I'm begging)