AN: So this came up when I saw the episode of How I Met Your Mother, when Lily came up with 50 reasons to have sex. This is just the first one.
Disclaimer: Don't own Life With Derek, or How I Met Your Mother.
1# Because you can't go to sleep
Casey was tired of tossing and turning in her bed. She had a test tomorrow, and she really should be asleep right now, but she was way too nervous, and stressed. She just couldn't sleep.
Attempting again to get some sleep, she closed her eyes and shoved her hand under the pillow, trying to get comfortable, but it was useless. With a sigh, she got out of bed and went to the other room across the hall. She entered without knocking and there was Derek, sleeping peacefully because when does he worry about anything?
"Derek," she shook him awake.
"What?" he answered, rubbing his eyes (adorably, she thought)
"I can't sleep."
"Is that my problem?" he asked indignantly.
"Please, just… Just talk to me a bit, so I get tired," she pleaded.
"Fine," he gave up and held up the covers for her. "Hop in."
Casey smiled a little and went under his sheets. It was so warm and comfortable. She should have just come to him a lot sooner.
"So… what do you wanna talk about?" she asked awkwardly.
"You're the one who asked to talk… so talk."
"You know this thing that has been going on…? Between us?" she asked nervously. They had kissed and cuddled on the couch a couple of times, but it was kind of a silent arrangement. They hadn't talk about it, and Derek certainly didn't want to start talking about now, with her pressing up against him on his bed.
"Yeah… Are we gonna talk about it?" he asked, his voice strangled.
"Might as well. We have to talk about it sooner or later. So… are we… together?"
"Do we have to put a label on it? I like you, you like me, we kiss, we cuddle. Does there have to be a label?" he complained. He didn't want to be all mushy.
"I just want to know we're on the same page, like if we are exclusive or if you just want to randomly make-out with me to work out your frustrations, because if that's the case, I can't do i-"
"Casey! Stop with the drama!" he begged. "I like you, you like me. You're mine, I'm yours. That's it, okay?"
"Okay."
"And there's nothing random about our make-out sessions," he joked.
"Der-ek!" And he smiled, because he loved when she ripped his name apart like that. That was such a Casey thing to do. And although for some people that might be a turn off, for him it was such a turn on that he had to kiss her.
The kiss soon progressed and she was suddenly pinned underneath him, opening her legs for him to press closer to her. His hands went under her tank top that she used to sleep, and began going for her breasts, while she gasped and moaned under his ministrations.
He waited for her to stop him at any moment, and when she didn't he asked "Are you sure?" when there was only one garment of clothing left in her very naked body. She nodded and pulled him down against her, while sucking on his neck.
"Say that you're mine," he requested, right before he entered her.
"You first," because they are Casey and Derek, and she couldn't just do what he said.
"You're so difficult, Princess," he chuckled. "I'm yours, all yours," he said, sincerely.
"I'm yours too, Der. Forever and for always." And with that she pressed up against him and he entered her. Although it hurt at first, she couldn't help but notice how amazing it was and how right it felt. As for him, he couldn't even speak. It was too much, but at the same time, it was not enough.
When they were finished, Casey thought that not being able to sleep was a poor excuse to have sex, but oh well, he was hers, so she could have all the excuses in the world and he would still want her.
AN: So... should I write the other 49 reasons or leave it at that?