Guilty Secrets and Past Lovers

Summary: When Olivia's ex turns up and stirs up old feelings within her how will this effect her blossoming but secret relationship with Casey? CO.
Rating may go up for later chapters. This is slash so if you don't like it, don't read it. But if you do please leave a review!
Mrs S x

"Morning Liv," Her partner greeted, looking up from a stack of case files piled up high on the desk in front of him.

Olivia Benson smiled. "Hey Elliot." She headed for her own desk, taking off her coat first and draping it over the back of her chair. "How are you this morning?" She asked, settling into the usual, comforting relationship she had with her partner of the previous eight years.

"I'm good." Elliot smiled, making eye contact with her partner and close friend. "And you?"

Olivia smiled too. "I'm very good, thank you." She replied, a glow radiating from her cheeks, which the detective in Elliot was instantly suspicious about but he knew eventually Olivia would reveal all. After all these years they could trust each other with everything, even their lives.

Assistant District Attorney Casey Novak climbed out of her king size bed with a smile plastered across her beautiful face. She folded the bedclothes back and smoothed out the white sheets. As she did so, memories of the previous night came flooding back and the strawberry blonde's smile intensified. As she headed for the bathroom to shower she could still feel Olivia on her skin and she was loath to wash it away but she knew they would have more nights like this to come.

Casey slid out of her lavender coloured negligee and climbed under the hot spray of the shower, tilting her head back as she let the water cascade down her slender body.

Within half an hour the ADA was dressed in a tailored dark grey suit and baby blue blouse, topped off with killer black knee length boots. There was a chance that her and Olivia's professional paths would not cross today but she wanted to be prepared in case they did.

Olivia and Elliot had received no new cases that frosty Thursday morning so they worked their way through their reports. For the most part they worked in companionable silence but occasionally they exchanged conversation about what was going on in their lives. Olivia hated holding things back from him but she and Casey had come to an agreement; no one could no about their liaisons. It was hard enough for women to be taken seriously in their lines of work but they had succeeded and refused to let their sexuality effect their co-worker's judgement of them.

Olivia knew that it wouldn't change Elliot's opinion of her as person or as a detective but she wasn't ready to face everyone yet, especially when she and Casey were just finding their feet in their relationship.

Olivia was just saving a completed document on her computer when John Munch appeared in the squad room.

"Liv, there's someone to see you downstairs. Apparently he's been hanging around for a while." The older detective told her.

"Thanks Munch." Olivia replied, pushing her chair back and heading down the stairs. She wondered who could be coming to visit her during her working day. It obviously couldn't be Casey however much she wished it. She was in for much more a surprise than that when she saw who it actually was.

"Richard?" She called out in surprise. Her ex lover Richard Carlson stood before, looking a little older than he had when Olivia had last seen him but apart from that not much had changed. With guilt Olivia noticed that he could still stir up the same feelings in her with just one look from those chocolate brown eyes.

"Liv." He smiled, the gesture lighting up his already handsome face. Olivia tried to ignore the fact that her heart was banging against her ribs. She tried to think of Casey but summoning her into her thoughts was getting harder by the second and Olivia hated herself for it.

"What are you doing here?" She demanded, her words coming out a little more harshly than intended.

"Not the greeting I had hoped for." Richard commented with a hint of amusement.

Olivia was becoming exasperated now. "But what are you doing here Rich? We've been over for a long time now, we've both moved on."

Richard reached for her hand but the brunette pulled away in time.

"That may be so for you Olivia but I want you back."

He locked eyes with her and for a few moments Olivia couldn't look away. When she finally came back to reality she realised, with shock, that she was falling for Richard's old charms again. She took a step back, to distance her from him and her feelings.

"Richard, I have to go. You probably shouldn't visit me here at work, okay." She was already turning to leave when he replied.

"Whatever you want Liv, but I'm not giving up till I get what I want."

"Are you okay, Liv?" Elliot asked, looking up with concern as Olivia entered the squad room. He could tell that there was something up with his partner.

"I think so." Olivia said, taking a few moments to piece her thoughts together. She needed to confide in some and she trusted Elliot, it would be much simpler to talk to him about this than it would be with Casey. "My ex boyfriend just turned up."

"Oh." Elliot replied, turning to face her now. "Go on…" He urged.

Olivia placed her hands in her lap and clasped her fingers together.

"He wants me back." She said simply.

"Ah, and I guess you don't feel the same way."

Olivia shook her head but stopped mid movement. "I don't honestly know, El."

"But, unless I'm wrong, you're not seeing anyone at the moment, are you?"

Olivia sighed, she wasn't ready to talk to anyone about this yet and she hated lying to Elliot.

"No, no I'm not but I still don't know what to do."

At that moment Cragen appeared and Elliot and Olivia went back to work. Detective Stabler had the unsettling feeling that more was going on than Olivia was telling him.