A/N Written by lacrimatra (and beta'd by Riatree - I think you know the drill now!). Had to get back to Eric after our nice little Pam digression. I tried to keep it squeaky clean and failed. Blame Eric - he is far too hormonal! Please don't forget to review - at the moment we have no idea whether all you guys actually like this fic or just think it's trash...

Eric alighted on the doorstep to the lecture theatre. He was late. Despite this, he couldn't help but check his appearance was as perfect as it had been before the flight in the reflection of the windows before he entered. He moved a stray blond hair back to its rightful place, winked at his reflection just to check that he still looked hot enough when flirting and walked into the building. The woman at the desk directed him up the stairs on the left, looking slightly flustered at the appearance of the devastatingly sexy vampire standing in front of her. He hurried up the stairs and saw the double doors to the lecture theatre. He eased open one of the doors to see that Kat was talking about the properties of sub-atomic particles (based on the power point on the projector screen behind her). He carefully stepped round the door, trying to be as inconspicuous as possible – this was, of course, completely impossible considering that he was a six-foot-four vampire sex-god who was walking down the centre of the room in the middle of the lecture. Kat, dressed exquisitely in a leather, tight, knee-length skirt and white blouse, saw him and smiled,

"Hey Eric, so glad you could make it. Guys this is Eric – an... acquaintance."

About twenty heads turned to look at the vampire who made his way down the closest unoccupied row to the centre. He sat down and gingerly smiled at them, for the first time in his life uncomfortable that he was now the centre of attention. He was glad that he had brought with a notebook for he now busied himself in copying the title from the power point and soon the heads turned back to face Kat. All the guys were, he was pleased to note, decidedly ugly and – from the questions they asked and the pages of notes they wrote - seemed to be complete geeks. The only one who seemed to have an IQ below 140 was the guy sitting right in front of Eric. All he was doing was drawing a very detailed sketch of a cat and decorating 'Kat and Matt 4ever' with careful shading and lots of little hearts. Eric couldn't believe that someone had taken all the effort to go the class and was just using it to drool over Kat. It was so pathetic.

There was no one in the lecture theatre now. She was packing away. She looked at him, meeting his eyes with her beautiful dark ones. He slowly walked down the steps of the auditorium until he reached her. He lifted her onto the desk and she carefully and slowly kissed him on the lips. Then she reached her hands around the back of his head, entwining her fingers in his hair, pulling him towards her. They were kissing more passionately now, breathing heavily when she came up for air. He slid a hand up her perfect, shapely thigh and then used his long fingers to unbutton her blouse, one button at a time, feeling her soft skin that sparked with his touch...

"Eric? So what do you think of Robert Marshak and Sudharshan's V-A theory of weak interaction?" Her voice shattered the perfect image he was picturing in his head. And, another first for him, he didn't know how to answer.

"Err... Well it has some good merits. Yet I think that there isn't enough... evidence to err... fully prove the theory." He was glad to see that the other people in the room were nodding and Kat smiled.

"Well I completely agree with you there. Yet, from your experience as a physicist, do you think knowing this theory helped your work in any way?"

"Err..." Thankfully one of the other students put their hand up, saving him from certain social suicide.

"Professor! I just was wondering how Sudarshan deduced that if a Universal Fermi Interaction was present, it had to include the axial vector interaction?"

Kat reluctantly (as Eric liked to think) turned away from Eric and answered the student's question. Luckily the question generated a discussion that took up the last fifteen minutes of the class and Kat seemed happy to let the class drift into the more relaxed atmosphere as people happily argued the merits of the theory. Eric pretended to write down everything being said, hoping that with his head down, Kat wouldn't have to ask him any more unanswerable questions. The only thing he was really writing down was 'Look up theory on internet' because he was certain it would come up in the next conversation he had with her.

Kat checked her watch, sighing, and waited for one of the students to finish a passionate point about the topic.

"All very good points here - well done everyone. Unfortunately we've run out of time! I'll see you guys next week - we'll be examining weak interaction more closely and also have a quick look at lattice gauge theories." Everyone stood up, a few hurrying straight out of the room while some of the others hung back to ask Kat a question or just to thank her. The creepy guy in front of Eric hurried over to the short queue of people waiting to speak to Kat and, when it was his turn, he thanked her profusely and she smiled, lightly touching his shoulder to which his eyes widened in surprise. As the weirdo left, Eric watched as he kept staring at his shoulder and smiling contentedly to himself. Once the rest of the group had gone, Eric finally walked down the steps to where Kat was. She was logging off the computer, waiting for it to let go of her memory stick. She turned to him, flashing that dazzling and beautiful smile,

"Did you enjoy the session?"

"Yes it was very... insightful. Thank you for allowing me to attend." She turned back to the computer, resorting to just pulling the memory stick out because it was taking so long for it to register her request.

"There's no need to be so formal - you can come when you want and leave when you want." She put the USB in her handbag and folded her notes, placing them in the bag too.

"Well thank you all the same. I feel like I learned a lot." Like not to start having sexual daydreams about the lecturer in the middle of a lecture in case she picks on you to answer a question.

"It's my pleasure. Oh, do you want to come to the gig I've got on Saturday night? I wouldn't normally ask, it's just that my brother wants to get as many people as possible because it's a new venue - to give a good impression. You really don't have to come if you don't want..."

"No I'd love to!" He said, enthusiastically. He coughed. "I mean, it sounds good. I'll try and make it."

"That's great!" He loved it when she was excited, her eyes glowing and her grin filling her face. "It's at the Electric Ballroom in Camden. It's basically a showcase of some random amateur acts so we'll only be doing a few songs." She pulled on her bag and walked to the door. He opted to follow her but felt he had to find some sort of topic of conversation.

"So where are you from? I thought I could detect a slight accent during the lecture." He cursed himself for being so blunt, worried he was being offensive.

"I used to live in Russia until I got a place here at Imperial College. I lived there with my parents and Marat - my brother - until I was about eighteen. But I hated it in Russia! The only good things I got from there were these shoes!" She casually modelled her black stilletos with small metal studs around the toe, seemingly there just to prevent them from looking too feminine, with a red sole. He noted the way the heels accented her calf muscles, making her form even more desirable, if that were possible. He dragged his eyes away from her perfect legs, trying (and failing) to stop himself imagining them wrapped around his body.

"I can see why - not only are they great shoes but if you were, for instance, to date someone of a taller stature those heels would definitely be of use when performing certain activities."

Kat burst out laughing. Eric tried to understand how a line like that, which would normally have a girl jumping on him and basically having sex with him there and then (to prove that heels were not needed), made this one laugh.

"Does that line actually work?" She said, gasping for breath in between her fits of hysterics. Once more her innocent act - in this case laughter - forced him to imagine a different past time they could be doing that would leave her in the same, breathless state.

"You'd be surprised." He said, smiling, hoping he could pass it off as a casual joke. They walked in a comfortable silence for a while; Kat still giggling slightly, Eric knowing that they would have to part ways soon and determined to keep the conversation flowing.

"Kat... that's not a very Russian name - is it short for anything?" He ventured, thinking it was wise to move away from the supposedly dangerous area of flirtation.

"Katerynna."

"Katerynna..." He lolled the name around in his mouth, enjoying the feel of the consonants on his tongue and lips. "Älskarinna." He muttered, marvelling at how similar her name was to the word, and at how he couldn't stay away from mildly sexual references even in the space of one conversation.

"Oh you're from Sweden then?"

Eric was slightly taken aback. Not only had she heard his mutter but she also knew what language it was. Surely she was just telling from his accent or something...

"Yes...What made you say that?"

"You just said 'Älskarinna' - 'lover' in Swedish. I therefore assumed you were Swedish, unless you like talking in random foreign languages."

"Well...Um... It was just a joke - your name sounds so similar you know..."

"Don't worry about it. What I want to know is whether you've heard of the Swedish band Pain? Or maybe Opeth?" They had reached a fork on the road and from the way Kat stopped walking and turned to him, Eric realised she clearly wouldn't let him follow her all the way home.

"Um. Yes. Of course I have. They're really good!" He had no idea what these bands were. He made a mental note to look them up on Youtube when he got back.

"Well we really must compare music! You'll probably like the stuff we're playing tomorrow night, it'll mainly be Nightwish with a bit of Metallica and Sonata Arctica."

"Sounds good." He said, staying on the safe side of the English vocabulary.

"Well bye then - see you Saturday night!" She turned from him, her long hair shining in the street light.

"Err... yes - see you!" Once again, his wide range of pick-up lines failed him when faced with this beautiful girl.

She looked back at him, probably to say goodbye again, he liked to think, not wanting to miss the chance to have one last look at the gorgeous vampire-sex-god. He used that opportunity to push off into the air. Not that he thought himself particularly ostentatious but desperate times call for desperate measures and with her not reacting to a single sexual innuendo, he counted this as a desperate time. Desperate enough for him to resort to showing off his flying skills.