Dean knocked on Cas' door, an excited grin plastered on his face- he'd come to surprise Cas. He held a box of chocolates behind his back, waiting for Cas to answer the door. His eyes widened in surprise as a short brunette with a smug smile answered the door.

"Who are you?"

The short guy asked.

"Who are you?"

Dean replied, a hint of anger and jealousy in his voice.

"I'm the older brother of the dude that owns this apartment- and you are?"

"I'm Dean."

Dean's eyebrow furrowed with confusion, and still some anger, as the brunette's mouth formed an 'O', and then a sickeningly mischievous smirk appeared on his face.

"You're the famous Dean..."

He stated, looking Dean up and down as he raised his eyebrows.

"The famous Dean?"

"Oh yeah, Cassie won't shut up about his new boyfriend."

Dean smiled slightly at being called Cas' boyfriend.

"Is he here now?"

"Yeah- Cassie!"

He called out, causing an exasperated Cas to appear at the door.

"Gabriel, for the last time- we've only been on two dates, I don't know if he's my-"

Cas stepped back as he saw Dean smiling at the door.

"I wouldn't mind being called your boyfriend."

Dean interjected.

"O-okay..."

Cas blushed, staring at Dean, the pair looked at each other sheepishly.

"God- cut it out before I throw up."

Dean heard from a female voice in the living room.

He looked over to see a pretty redhead sitting on the couch. Dean gave a small wave and introduced himself.

"Hi, I'm Dean."

"I gathered," the red head replied. "I'm Anna, I'm Castiel's sister."

Dean nodded before sitting beside her as Cas and Gabe bickered over drinks.

"I must say, you are hotter than I was expecting."

"Thanks...?"

Dean wasn't sure if he should take that as a compliment- it could mean Anna thought he was fit, or it could mean hat Cas called him horribly ugly.

"Not that Cas has said you were bed looking, it's just he spent so much time talking about his feelings, the only thing he mentioned was your hair colour, he drabbled on about your eyes and-"

Anna stopped herself, but suggestively lowered her eyes to Dean's crotch before returning to their eye contact. Dean felt heat rise in his cheeks before Cas and Gabe finally joined them with drinks.

They talked for hours, Dean enjoyed getting to know more about Cas and his siblings. Dean said his goodbyes and was going to head home.

Cas held his hand, Dean spun round.

"Dean- can Anna stay with you tonight? I only have one spare room and Gabe already called the bed."

Dean smiled before looking at the red head.

"Sure- I have a spare room."

Anna nodded before grabbing her stuff from Cas' room, she joined Dean in the car. They soon reached Dean's apartment.

"Wow- great place!"

Anna exclaimed, admiring Dean's apartment.

"Make yourself at home."

Dean said, putting his keys down and taking Anna's jacket from her. She sat on the couch, before Dean sat with her, holding two glasses of wine.

"Here," he said, handing one to her. "You did a lot of travelling, Why don't you just chill out."

"Thanks."

Anna giggled after taking a sip of the wine.

"I think we'll be good friends Dean."

"Yeah."

Dean said, leaning back on the sofa.

He didn't notice Anna shifting closer to him.

"So- you're bisexual?"

"Yeah- it means I like guys and girls."

Anna smiled.

"So you get the best of both worlds?"

"I guess..."

Dean chuckled, he didn't notice Anna edge closer towards him, until she placed a hand on his chest.

"Anna- what are you doing?"

Dean tried to move away, but Anna had inched herself further so that she was practically straddling him.

"Shhh..."

Anna whispered, before pushing Dean, by his shoulders, further into the sofa, pressing a kiss to his lips.

"Anna...stop!"

Dean managed to get out a mumbled muffle, before he was shut up by Anna's lips crashing into his.

He tried in vain to push Anna off, but he couldn't without hurting her.

He couldn't help his erection from springing as Anna removed her top and bra. She grabbed Dean's hands and made him fondle her breasts.

Dean tried pulled his hands away, and tried to push Anna's face away as she started kissing his neck. She unbuckled his belt, removing his jeans and then his underwear, ignoring his protestations for her to stop.

Dean was still pinned to the sofa, Anna removed her jeans and underwear as well.

"Anna- what the fuck are you-"

He was cut off as Anna placed her hand over his mouth.

"Oh...Dean!"

She moaned loud enough so that the pair didn't hear the door open.

"Anna you forgot your-what the fuck!"

Cas was struck with horror at the sight before him.

Anna got off Dean and scrambled for her top, leaving an exposed Dean stuttering in front of Cas.

"Cas...it's not what it looks like...I told her..."

Dean couldn't finish the sentence before he burst into a puddle of tears.

"Didn't realise you were such a good actor Dean- I don't want to hear your excuses...I thought...I thought you were different!"

Cas' voice was shaky as he could feel tears stinging his eyes, he had to get out of here before Dean saw him cry.

"We're full of clichés, so this was bound to happen eventually, right?"

Cas cried before storming out, slamming the door behind him.

"Cas- come back!"

Dean called out, zipping up his trousers and running down the hall, in an attempt to catch up with Cas.

He grabbed Cas' wrist, pulling him and forcing him to turn around.

"Cas- just let me explain..."

"What is there to explain Dean?"

"It wasn't how it looked- it was..."

"It was what Dean- you cheated on me with my sister- how can you explain that?"

"Will you just let me finish!"

"Yeah, I'll leave you to finish with Anna!"

Cas screamed before shutting the door and getting into his car.

Dean returned to his apartment, only to see Anna gathering her stuff together.

"GET THE FUCK OUT!"

Dean yelled, Anna rushed out, leaving Dean to sit alone in his apartment. Dean glared at the vase of orchids on the kitchen table. He picked it up and, before he knew it, it was lying on the floor, broken, smashed into tiny shards. Dean punched the wall, tears streaming down his face; he screamed out in frustration and pain as the realisation of what just happened hit him. He lay awake in bed that night, and as much as he tried, he couldn't stop the tears from soaking his pillow.