A/N: I'm sorry I didn't update yesterday, but I had no time, so.. I update today :) Enjoy! By the way, I know Alex would never say 'quod erat demonstrandum', but I thought that would be a genius mathematician's joke (and I study mathematics, so I couldn't resist). But I'm sorry if it bothers you.

Casey's head rested on Alex's chest that evening. They laid in bed, after they had some hot steaming sex in the shower. Casey's thoughts wandered off to earlier that evening.

Casey sighed when she closed the door behind her. A long rough day today. And the fact that Liz caught them, though not doing the deed, but after it, damn well knowing what they did.. Well, such a thing will leave its mark on a person. Especially because Liz was her boss. Their boss. They could have been fired effective immediately. Instead of that, they were only verbally punished. They should be happy. Thing is, Casey wanted it to be a secret. She wanted to figure things out. Make some things official before telling somebody else. But now two people knew. She poured herself a glass of whine and downed it. She went to her bedroom and undressed to take a hot shower. She didn't want to eat. She wanted Alex, but she wasn't coming home in the next few hours. She was just in the shower, when she heard her door. That couldn't be true, because there was no way that would be Alex and nobody else had the key of her apartment. She must have imagined it. She leaned to the wall and let the drops of water glide over her skin. In no time, the whole bathroom was steamy. A couple of minutes later the door opened. A hot blonde ADA walked in and she was naked.

"Can I join, counselor?" she asked seductively.

"Hmm. Go ahead." she teased.

"Did anybody ever tell you how sexy you look like when you're in the shower?" she ran her hand through Casey's wet hair.

"Hmm, I like it better with you in it too." she laid her hand on Alex's hip.

"Oh, you do? Why?"

"You know.." she kissed Alex's lips. "When I do this.." she kissed Alex's neck. "Or this.." she pinched Alex's earlobe with her teeth. "Or this.."

Alex cupped her pubic bone with her hand. "Or this.." she whispered. She kissed Casey, like her life depended on it. "You taste so good."

"I think that's the wine." Casey panted.

"Hmm." Alex moaned. She ran her hands over Casey's back. Casey pinned her to the wall. And ran her hands down her body, and cupped her pubic bone. She slid her fingers between her lips. Her hot, wet lips. Alex moaned again. She massaged her clit till she had to push Alex to the wall to get her from falling, because her legs began to weaken when she went faster and faster. Her ragged breath told Casey that she was almost there. She went faster than she already did and bit her earlobe, when she finally came.

After that Alex had returned the favor. Now they were both exhausted. Because they both didn't eat, they had order some pizza and ate it in bed. They talked about their work and stuff. Casey really liked that she would fall asleep next to someone who she could talk to. And wake up. But she barely knew Alex.

"Would you like to go on a date with me?" Casey whispered to Alex.

"Why do you ask?"

"Because."

"That's not an answer." But Casey could see Alex smiled.

"Because I want to get to know you."

"So you admit you like me more than you show." the blonde teased.

"Why do I always have to show my feelings?"

"Because you don't do that. But I need you to do that."

"You don't do that either." Casey tried to defend herself.

"Because I know I'm capable of showing my feelings, but I don't know if you are."

"Well, maybe I know it myself, and I doubt you."

"I don't think that's true, Casey."

"Well, then prove it."

"Okay. I really like you. I actually think this could be something. And I would love to go on a date with you, because I want to know everything about you. But if you want to know, I expected me to ask you first and not the other way round. So.. Mathematicians would say 'quod erat demonstrandum' now."

Casey laughed, but she blushed. "But I'm an ADA of the SVU. People don't like to date me."

"Yeah, me too, but I don't care. Besides, you asked me on a date. You don't want to?" she frowned.

"Oh, of course I want. But I-"

"You don't know how to handle this kind of situation."

"I didn't have any relationships since Charlie."

"Well, I don't commit so fast to someone, so I think we're on the same level of experience in this. Sort of. It will be okay, Case." she kissed the top of Casey's head.

"I guess."

"If it makes you feel okay a bit more, I will take care of it. The date I mean. I will pick a day and time. I will arrange everything."

"Okay." Casey closed her eyes, while Alex stroked her hair. She drew little pictures on her scalp with her fingernails. Casey really liked it when she did that. She dozed off a bit.

"Oh, before I forget to say.." Casey woke with a start, almost asleep. "Oh I'm sorry. But I wanted to say. We cannot have sex at work anymore. Liz came back to me in the afternoon. And it was really awkward. Because she asked me if the thing between us is just sex or more than that. And she told me that if she caught us again, she wouldn't be so easy on us as today."

"Hmm, I don't want to do that anyway anymore. What happened this afternoon.. Too awkward."

Alex chuckled. "Yeah."

"Olivia ignores me. Or she just avoids me. Same difference."

"I could have predict that."

"Yeah, but I hoped she wouldn't do that." Casey sighed. "It doesn't make work easier this way."

"She will get over it. She's a grown-up woman." Alex assured Casey. "Just give her some time."

"Yeah, I think that's the best."

It was quiet for a really long time. Alex still fidgeting Casey's scalp. Casey just listening to Alex's heartbeat.

"You know.. Our silences aren't awkward." Casey stated.

"I know." Casey could tell Alex was very far away in her head.

"What are you thinking about?"

"Oh just.. you.. me.. us.." Alex said the words slowly.

"What about us?"

"I think you know that."

"I do?"

"Yeah. What we have.. that's amazing. I mean.. You don't have that with everybody right? Amazing sex and the capability of talking. No awkward silences. Etcetera."

"That's true." Casey closed her eyes again, thinking about their first time. Casey didn't think Alex would set the phone call up, or actually planned her to have sex with her. She didn't know what she was thinking right then. The more she thought about it, the less she could remember of her thoughts that night. Why did she step into that room? Although she was glad she did it back then, because otherwise none of them would have done something.

"I'm glad you lured me." Casey sighed.

"Hmm, are you talking about our first time?"

"Yeah."

"Oh I'm glad it turned out this way. I was scared you would tell Liz about my sexy phone call."

Casey chuckled. "You really were? Because you seemed pretty confident. If I had told anyone about it, nobody would have believed me, so I wouldn't have ever done such a thing."

"Why did you walk in then?"

"I don't know. I try to remember. I think my body led me to you. And that sounds silly."

"Oh it doesn't so much."

"Hmm. I'm in love with you, Ms. Cabot." Alex seemed to beam, and that was pretty rare.