I slept with Dean Winchester.

That was her first thought, afterward. On the one hand, her inner Alpha was more than pleased with herself for bagging a male Alpha. Her uninitiated self however felt less than stellar about the whole thing.

"Dean" She began, nudging him.

"Hey" He replied.

"I am so sorry"

"For what?"

"For last night"

"You regret it?"

She paused for a second and realised she absolutely didn't. This wasn't like her at all, she'd never just slept with a guy on a whim. That was something other people did, but not her. She'd never had a problem with it, she just never felt the need before.

"No, I don't"

"Then quit being a girl about it"

"Hey!" She replied playfully hitting him again. "I am a girl!"

He smiled. He loved how she was hot, yet he could tease her and she never got wound up about it. Almost like one of the guys.

"So, are we doing this initiation thing or what?" He asked.

"I guess, It's just…"

"Just what?"

"Are you ready for it? I mean, really ready? We're alphas…. this is going to be our life from now on, the need to mate, dominate…."

"Sweetheart that has been my whole life. "

He looked at her, her face filled with a mixture of guilt and confusion.

"You've never had a one nighter, have you?" He smiled, secretly loving the inner torment playing out on her face. He didn't usually go for girls who weren't experienced in the whole one night stand thing, but he was more than glad to have made an exeption.

"No. I was always a commitment type. Don't get me wrong, I have no problem with the idea I guess I just never figured I would be the one…"

He laughed. Girls, always rationalising.

"You're so mean!" She replied, a huge smile on her face letting him know she was only pretending to be mad, throwing a pillow at him.

"Listen, you'll be fine. You're hot, you have an accent and you're a huge flirt, You're not gonna have any problems getting what you need"

"And if I do, I'm going to hunt you down"

"Is that a promise?" He replied.

She laughed. "Get out of here, I need to get ready"

"By the way, you're rocking that whole naughty catholic schoolgirl look."

As she closed the door, she couldn't stop smiling. She was an Alpha, Dean Winchester thought she was hot and she had an adorable Angel that's she was just dying to get her teeth into, literally. Being an Alpha could actually be a good thing.

As she entered the kitchen she could tell by the look on the brothers faces that she was the topic of conversation.

"So, today's the day huh?" Sam spoke.

"I guess so. You got everything for the summoning?" She replied.

"Yeah, got it. We should probably burn his bones after just in case"

"Good point. I'll get Cas to take me" She smiled.

"You know you won't poop for like a week, right?" Dean said.

"Better than spending nine hours on a plane each way."

"Right."

"I heard my name" Cas spoke, appearing next to her.

"Fancy burning some bones later?" She smiled.

"I do not understand?"

"After the initiation, we need to burn my grandfather's bones just to make sure no one else initiates themselves"

"Of course, I will take you"

"Listen me and Sammy are gonna go get the rest of the stuff for the initiation. We'll be back in a few hours, ok?"

"Ok. I'll start prepping what I can."

The brothers grabbed their jackets and headed outside.

As they headed for the Impala, Dean shot Sam a look. He knew Sam was desperate to make some comment about last night, but was holding back.

"You've got the look Sammy. What is it you wanna tell me but are too girly to?"

"Im not sure the two of you under one roof is a great idea"

"Are you serious? Dude we're not twelve"

"I know but you're both Alphas, and if last night was anything to go by…"

"…then what?"

"Never mind. Forget I said anything"

She turned to Cas, who was reading one of the new books from the shipping container. Even when he was reading he looked adorable.

"You're staring" he spoke, not looking up from the page.

"I know" She smiled, grabbing the book she'd begun looking at last night. She headed to the kitchen to make a cup of tea. She'd just placed the tea bag in the cup when Cas appeared.

"Cas! You'll give a girl a heart attack keep doing that" She smiled, instinctively raising a hand to her chest.

She didn't have a second to gather her thoughts as she realised that Cas had placed his arms around her waist and had placed his lips on hers. For an angel, supposedly chaste and holy, he was an amazing kisser. She returned the kiss, her alpha female once again delighting in the action. As he broke the kiss, her logical self flooded her with a wave of guilt.

"Cas, I…We…" she began, her hands flailing everywhere In trying to explain herself. "You're an angel, we cant… we shouldn't….I'm pretty sure I'll burn my ticket to heaven if….."

"I want this. I've never felt this way about a human"

She could hear the thumping of her heart in her ears, growing louder with each second spent looking at his beautiful navy blue eyes and his perfectly messy hair. However, as she looked closer, she noticed something in his energy. She squinted, hoping for it to become clearer and it did.

It was a letter.

And not just any letter. Being psycho kinetic meant she could see parts of peoples energy, their make-up that others couldn't. She'd never met any other men of letters, besides the brothers, so she hadn't experienced this before. She figured his angel energy was somehow affecting her ability.

"What is it?" Cas began.

She stepped back, tripping slightly over her own feet and grabbing the kitchen side so as not to fall over. Looking that intensely at an angels energy had made her head spin.

"We… we can't do this"

"What did you see?"

"Your vessel, it has a letter and somehow it's bound itself to your angel mojo"

"What do you mean?"

"You're a man of letters"

"But that's impossible, I'm an Angel and Jimmy is not related to the Men of Letters"

"You're an angel In a human vessel! I don't know how this works Cas, but you have a letter and we…. We can't"

"Why?"

"Because you're a Delta"

"I have not read in detail about these letters. Why is that a problem?"

"Alphas and Deltas….. they're…. to coin a really bad expression… 'soul mates'. Once they mate they're bound to one another, destined to keep the alpha bloodline going"

"I see"

"Angels and Humans can't mate, we both know the consequences of that"

"This is true. But….."

"But what Cas?"

"I still want you"

He pushed her against the wall, a little too hard, underestimating his angel strength. She didn't mind though, she actually liked the roughness. Soon they were kissing hard and fast, with Cas's hand holding up her left thigh.

"For an angel, you're pretty damn good at this… what have you been up to Castiel?" She mused.

"I've watched humans mate for thousands of years, it was inevitable I learned something" He replied, placing kisses on her neck.

With that, she pushed off with her other leg, placing them both around his waist. He moved his arms to support her, before heading to the bedroom. As he pushed open the door, he dropped her on the bed. He took his overcoat off, and was about to remove his tie when he realised she'd grabbed his hand and brought him down on to the bed with her.

"Backwards tie stays, it's adorable"

"In that case…" he replied, clicking his fingers to render them naked, except for her knee high black socks. "I like the socks. The socks stay" he smiled.