Heya people! So here is the second week of cohabitation…not much to say, so I'll just let you read :D

Thanks to 1832TeaQL; wolfenstien; The HongKonger; Ashtreerose; PriscilaOrglene; Mental-Fan; Jisbon4ever; watchyouwalk; P. Schoeller; InMyVeins (Lisbon did had a sad story D:…and Jane and teens is another story :D); Anna (hee thanks!); leelou09 ;Mabeline36; 24Mentalistlover for their reviews ! thanks to the alerts and favourite too !

Disclaimer: only Kausner is mine :D

Sweet Fifteens -6

The following days went smoothly, as Lisbon and Jane came to an understanding. He would not always be on her back and following her everywhere as long as she promised to behave and tell him where she was going and when she was planning to come back. At night, when he heard her having a nightmare, he would stay in her bed and hold her until she stilled for good. They didn't do much, since Lisbon was too keen on lazing around and read or watch DVDs from her older-self collection.

The ninth day, she went to bed early and since everything seemed silent and calm past ten o'clock, Jane went to bed without checking on her. Much to his dismay, he was awoken by a loud knock on the door at 3 am.

The blond man stood up and took a sweater while heading to answer the door and hoping whoever knocked hadn't woken Lisbon up. But his worry was quickly forgotten, as he was greeted by the sight of a nervous Rigsby, resting a hand the shoulder of a stressed up… Lisbon. Teen Lisbon, dressed in the nice black pair of jeans he had bought her the first days and a fashionable green top. Jane blinked. What the heck was she doing outside dressed like that at that time of the night with Rigsby of all people?

"I… uh" the tall man babbled, not exactly knowing what to say. "I'll leave her to you now. Don't be too hard on her, ok man?"

-SF-

Jane put a hot chocolate cup on the table and pushed it towards her. Without a word, she greedily took it, swallowing everything in seconds. The mug was put on the table and she muttered a 'thanks', avoiding his eyes. It was obvious she was ashamed, and he still didn't exactly know why. He decided to tackle the subject now before she closed up completely.

"I'm listening" he said dryly, arms crossed.

Lisbon bit her lower lip and looked away. As he expected, she felt guilty enough right now to confess everything.

"I… asked Wayne to drive me to a nightclub. I'd never been there before. Don't blame him, I kinda… forced him to."

He remembered the blushing cheeks and toying with her cross and knew Rigsby had not managed to resist her cute look.

"And you didn't ask me?"

She dropped her gaze lower, finding the stain on her table very interesting.

"The thrill of sneaking out I guess" she eventually said. "And knowing I wouldn't get beaten up when I came back…"

Jane sighed in almost understanding.

"Okay, now what happened? If everything had gone okay, Rigsby wouldn't have bothered knocking at the door and you would have sneaked in the same way you got out" he added when she blinked in surprise.

The teenager shrugged.

"Nothing very bad…It was a nice atmosphere and all. I was having fun dancing you know, just dancing, maybe drinking a little; but no sneaky stuff! I swear I just wanted to have a bit of fun."

Jane nodded and waited for her to continue, forcing himself to remain silent.

"And there's that guy who comes around… we talked a bit, he bought me a drink –I asked for a can, cause I remembered stories about girls being drugged then raped and all because they didn't check their drinks and stuff. And so we talk and he says he finds me cool and all, and then he asks me if I want to get a few joints 'cause he's selling some and he didn't fill his quota for the night, and his boss is going to be angry and all. But I knew it was bull; I live with three brothers, I know when a guy is lying!"

She took another sip of hot chocolate before going on:

"And then there's that blond bitch, completely wasted, who asks Rob' –that's the guy- what he founds in me since I'm all plain and stuff." Her eyes brightened with a sparkle of anger, excitement and pride. "And I swear I couldn't help myself, I just punched that bitch right in her face and tell her if she wants to 'sound' just… smarter, then stop bragging off when she has fake breasts and her face changed."

Jane repressed a smirk, not wanting to give her the satisfaction of approving her; she had sneaked out after all.

"So before it turned to a general fight, I went back to Wayne and told him flat that Rob was a dealer. He called in the locals and its like hell's gate got loose! People were so loud and the cops were like everywhere, and if Wayne hadn't pulled me away I would have been taken with them. Can you believe it?" she added excitedly.

"I do" he said with a wide grin. "And in exchange of beliefs, you will also believe you will be staying in your room for the next two weeks' evenings."

-SF-

Jane's cell phone rang twice before he picked it up. On the other side, a very annoyed CBI boss spoke:

"Sorry to bother you Jane, but we need your help."

"Sorry Madeleine but I still have to watch over Lisbon. Can't you manage without me?"

On the other side on the couch, the teenager's face lightened and she mouthed immediately: 'Go! Go! I'll be fine!'. Jane ignored her and turned back his attention to the speaker. Hightower sighed and grumbled:

"Okay she can come in here. But she doesn't leave her office."

"All right. Will be right there." Jane shut the phone and grinned at the teenager: "Pick up your books; we are going to the CBI. Duty calls!"

She snorted and shook her head:

"C'mon I'm a big girl. Can't you leave me in my own apartment?"

"Teresa…" his voice trailed off warningly.

She rolled her eyes and went upstairs to get her jacket.

They arrived at the CBI unhurriedly; the guard made Lisbon a visitor badge again and they headed to the second level. On the way to Lisbon's office, they came across Cho who, despite being surprised by their presence, seemed relieved by his arrival. Apparently their current suspect had murdered his wife and her lover but they could not get a confession out of him, while all evidence pointed to him as the culprit and so did the witnesses' statements. Jane dropped the teenager in her office, closed the door and wandered off towards the other side of the glassed wall. Then, making sure he was not in sight right away, waited. It didn't take long before the door opened and a back-haired teen peeked out. Jane waved at her from afar and saw her pout when she spotted him.

"Trying to escape?" he teased with a disapproving tone.

"Can't I just walk around? I promise I won't try to sneak away!" she replied, grimacing. "I swear!"

"As long as you don't run away in the streets… you are already confined in your room."

She winced.

"Don't remind me. So, can I? Pretty please?"

She attempted puppy eyes and he couldn't help but laugh heartily.

"All right, as long as you don't annoy anyone. Are we clear?"

Lisbon grinned, thanked him and went off, observing her environment like if it was a puzzling museum. On his side, Jane headed towards the interrogation room.

The man was good, he had to admit. Being a psychiatrist helped him understand the mind of his patients and play tricks on Cho and Rigsby. But as good as Dr. Goethe was at messing up minds, Patrick Jane was always better. The blond man had indulged him in a false sense of security for the last ten minutes, making the doctor believe he could actually elude him with witty remarks. After exiting the interrogation room, Jane told Rigsby to let Goethe cook a few minutes. He would come back to finish him, but in the meantime, he needed a cup of tea.

"Hey Teresa, what are you doing?" Jane asked when he spotted her in front of the coffee machine. The teen jumped in surprise at the sound of his voice and turned to meet his eyes. He noticed immediately her body trying to hide something on the counter. "Are you all right?" he wondered, frowning. A forced and panicked smile grew on her lips and she nodded frenetically.

"Yeah, yeah! Never better! Agent Terry asked me if I could do him some coffee so no problem! Don't you have… things to do, like a suspect to interrogate or something?"

The blond man didn't insist but had a feeling when he smelt something burning. He caught Cho from the corner of the eyes waving at him and decided to leave, wondering what she had done this time. The cup of tea could wait a little longer, he had a confession to get out of a turned-psycho doctor.

It didn't take much longer to make Dr. Goethe to admit he was a jealous fellow and lost it when he caught his wife and lover in their bed. What surprised Jane though was when he came back to Lisbon's office, he caught sight of his protégé sitting on the velvet couch, huffing in annoyance and pouting, one of her wrists cuffed to a small desk next to the sofa. Hightower was also there, arms crossed and not looking exactly pleased.

"Goethe confessed" Jane threw in as soon as he entered, hoping the new piece of information would be enough to cool her anger. The black woman just nodded and took a key from her pocket.

"Killjoy" Teresa muttered under her breath, glaring at Hightower as the she undid the cuffs. "I wasn't doing anything wrong."

"You messed up the coffee machine, butchering the refrigerator's wires, interrupted an interview and almost activated the fire alarm."

"It was an accident! The cup slipped from my fingers and I thought I saw a flame and I didn't know where the extinguisher was! And I was looking for Jane!"

Jane smiled in amusement while Cho and Van Pelt had a hard time repressing their grins. Rigsby, on his part, looked devastated by the newly out-of-service refrigerator.

"And I will skip the fact you are currently insulting me. I was fifteen before young lady" the black woman added. "Now, Jane, I don't want to see her in the bullpen again."

"Yes ma'am" he chanted cheerfully, heading to the door. "And don't forget not to fire her right away when she comes back!"

Lisbon frowned at him, wondering what he meant before hopping behind him, throwing a sided glance at the retreating boss. She waited until they were at the end of the corridor, still in Hightower's hearing, before asking:

"What's that woman with the stick up her ass? Who is she?"

Jane caught the black woman's expression from the corner of the eyes and had a very, very hard time not chuckling too audibly.

"Your future boss" and when Lisbon's jaw fell in embarrassment, he busted out in laugher.

That's when Carrie, from cyber-crime, passed along and heard them. She sent an incredulous look to her co-worker, David, mouthing 'was that Agent Lisbon?'. It didn't take more than half an hour for the rumour to spread, that the petite boss of the Serious Crime Unit had turned into a teenager and was now under surveillance from the infamous consultant.

-SF-

"Jane? Can I ask you something?"

The blond man looked up from his newspaper and watched a biting-lower-lip, red-cheeked teenager.

"I suppose you just did, but I'm all ears anyway."

She took a deep breath and blurted quickly:

"Howdozitfeelwhenyukisssumeone?"

He blinked once.

"Could you repeat that slower please?"

"How does it feel when you kiss someone?"

Twice. Were his ears dysfunctional somehow? At her serious –and slightly embarrassed expression, he supposed his hearing system had nothing wrong.

"You've never been kissed before?" he asked with a note of amusement.

"I never had a boyfriend, so no" she shrugged; yet not managing to erase the blush off her cheeks. "I mean… never mind. Forget what I said, okay?"

Before he could even answer, she stormed out of the room. Jane just watched her leave, wondering what went through her head at the time.

Later in the morning, Elise and Cho showed up to take Lisbon out for the day. The woman had convinced her boyfriend –and Jane suspected soon-to-be fiancé- to see another of those foreign movies he dreaded so much and offered to bring Lisbon along. The Asian man had told her about his boss' situation, and the woman was obviously not happy to hear the teenager was staying at home all day.

"She needs to get some fresh air!" Elise chided him at first, Lisbon keeping wisely her mouth shut about the fact she didn't want to go out and Jane was just going along. "Now should we go?"

"Uh…" Lisbon hesitated, glancing at the blond man. He nodded in agreement and she grinned back.

"Seems like she listens to you more man" Cho noticed when Lisbon took off to the upper level to get her jacket. Jane smiled smoothly and shook his head.

"Nah, we are just getting used to each other. Bring her back before six; she sneaked out the other day."

"Yeah, Rigsby didn't stop mentioning it and Van Pelt was furious with him. Said he didn't need to follow their boss in every stunt she made; one Jane was enough."

"That's mean" the blond man replied, faking hurt. Then, when teenage was back, added: "Have fun."

True to their word, the door rang at five fifty five pm. Lisbon had another fantastic day, given the brightness in her eyes, and he knew he would have a full report of the events at dinner time. What he did not expect was Cho cornering him outsider and blurting:

"Lisbon didn't stop talking about you. I tell you, she listens to you more, but I'm not sure how 'used' she got to you."

Jane frowned at his words.

"What exactly do you mean Cho?"

He shrugged.

"Just that she does not have platonic feelings for you man."

At first, Jane didn't want to believe him, not having noticed drastic changes in Lisbon's behaviour. It became clearer though when she brushed him while taking the pan to cook dinner. She was very physical and following him like a shadow everywhere. Leaning against him when they were sitting on the couch watching TV (though she swore his shoulder was a perfect cushion for her head), or watching him cook an omelette, or ogling him discreetly –more discreetly than with Rigsby, at least. The game lasted the next day and a little before evening, he cornered her and attacked:

"Teresa, listen to me. I don't know what you are playing at, but you must stop now."

The teen bit her lower lip in wonder and didn't look at him straight in the eye.

"I don't know what you're talking about."

Jane sighed. That's one thing he hated about adults and particularly teens; always denying everything.

"Listen; I'm flattered by the attention, but you must understand I will not flirt back -because you're obviously flirting with me. Is it because of what you told me yesterday morning?"

"Okay it… it's just…" she started, but after crossing his imperturbable gaze, looked away. "I like you; is it wrong to want a bit of attention?"

Jane shook his head and put a hand on her shoulder, using the other one to hold her chin and force her to look at him.

"No it's not. But understand this; I… I can't. You are fifteen Teresa, I am forty one."

"I know you like me. Or the 'older me'" she quoted with her fingers. "I heard them talking at the office about 'us'. That we always flirt unconsciously. Why am 'I' so different?"

"Because you are not the Lisbon I know."

The comment upset her, he could see it in her eyes, but it was necessary in a way. He didn't want to hurt her and, more selfishly, didn't want to hurt himself. If they started something and she pushed him away afterwards, once she was back to normal, he wasn't sure he would be able to handle it. To his relief though, she seemed to accept his reasoning.

"Can I still… can I sleep with you tonight? I don't have nightmares when you're around."

Jane smiled bitterly and nodded, not really looking at her. That night again, she ended spread all over him; head tugged under his chin, legs intertwined… and once again, he had troubles falling asleep as he could feel her breasts pressed against his chest. The same thought came in mind, just like every night he shared the bed with her. Why did she already have to be so… curvy? During the day, he had no problem remembering she was a teen, but when the lights went off, all he could feel was a feminine body pressed against his. And now that he knew she was carrying unneeded feelings towards him, it made it more difficult to ignore how easy it could be to have his way with her. Damn. Why did he have to be attracted to Lisbon to begin with?

Jane suddenly felt her fist tightening on his shirt and her face burying itself in his chest. Her arms and legs were slightly trembling and he could feel his pyjamas moistening at her eye level. She didn't sob loudly; he had to give her that. He still didn't like the way this situation turned out, though he knew being clear on his… feelings was the right thing to do. He absentmindedly ran a hand over her back, up and down; in the hope the repetitive gesture would calm her down. Soon enough, he felt her body relax and go limp against his. The hand rubbing her back slipped up to her head, and he buried his fingers in her silky dark hair.

"I like you too Teresa" he whispered back, closing his eyes in turn. In his mind, the face of his Lisbon grinned amusingly to him. "Please come back to me soon."

-SF-

The man hadn't given sign of life since he had been kicked out of Lisbon's apartment, so Jane figured he had every right to be speechless to meet Michel Kausner at their doorstep. The scientist had kept his lentils and put a brown jacket this time, and was carrying a small backpack in one hand.

"Uh… hi" the inventor said tentatively. "What's up?"

The consultant shook his head, thinking the man should work on his approaching techniques. So he figured the man wouldn't mind a direct approach.

"Hi. What do you want?"

Kausner seemed to relax slightly –so more at ease with directness- and replied:

"I was just passing by; to get some news. How is Agent Lisbon?"

Jane shrugged and stepped down the stairs to put the garbage bag in the container.

"Okay I guess. Is something wrong?"

Kausner hesitated a moment before asking if they could continue this conversation inside. They took place in the living room, Jane urging to the inventor to speak quietly for Lisbon was still sleeping.

"I've studied the effects of the BT with the remaining of the potion on my mice" he started. "If I'm right, Agent Lisbon might go through a few troubles in the next days."

Jane frowned; he didn't like the tone of it.

"What do you mean?"

"That her mental is likely to change back to normal, her brain cells will regain their original form."

A soft smile grew on the blond man's lips. At last, the effects would slowly start to vanish. His Lisbon was soon coming back.

"That's great then…" his voice trailed off when he caught the gloom expression on the man's face. "That's not it?"

Kausner shifted uncomfortably on his seat and went on:

"While her brain cells will grow back to normal, the one that were created during the last week will be altered. To put it clearly, she will likely forget everything that happened and never remember."

"What am I likely not to remember?"

Lisbon's voice took them both off guard. She was standing in the staircase, eyes narrowed on Kausner.

"And what is the creep doing here?"

The inventor's face remained impassable but Jane could see the slight hurt in his eyes. Rejection. Only then he remembered the man had nothing close to a family. A little bit like him, before he met the team.

"We were just talking about you" Jane said with a smile. "I was just telling him 'Teresa has been a good girl lately', haven't you?"

She looked away, her cheeks turning bright pink and grumbled something about needing to use the bathroom. As soon as she disappeared from the room, Michel grinned, amused:

"She likes you."

Jane's lips twisted upward slightly. If Cho hadn't tipped him off, it would certainly have been worst.

"Teenage crush" he replied gently. "It will fade away."

"You're flattered to get a fifteen years old kid's attention? Wow, you must be in serious lack of romance" the inventor shot, smirking in turn.

"We're talking about Lisbon" Jane replied smoothly, his eyes not leaving the door the teenager had disappeared through. "Okay, a teen Lisbon, but she's still Lisbon."

"Should I understand you have a thing on the older Lisbon then?" the man added, on the verge of laughing. "Now I understand why you're worst than an overprotective father towards the guys ogling at her."

"Shut up Mick. Why don't you worry about yourself and take care of your business?"

The inventor sighed dramatically.

"If only I had business going on. No inspiration for writing or building new things during my free-time… I had to get myself busy myself so I wooed Madeleine for a while. Offered her a coffee as a friend. She sent her husband after me three days ago."

Jane had a hard time biting back a smirk. With that technique, the only thing he would manage to do is to bring Hightower and her husband closer.

"Did know you are quite the annoying wooer, Mick" he smirked, amused by the man's behaviour. It was official now; whenever he needed someone to piss off the black woman, he knew who to call.

"Oh believe me; I had to court my wife for months before she actually agreed for a coffee in her office. I can be very persistent when I want to" the inventor added, grinning. Before turning towards Jane and smirking in return: "You're the kind of man to do the same, right? Holding on whatever you have that's precious to you." He nodded quickly towards the door Lisbon used to get out to emphasise the hint. "Better worry about the way you look at her, by the way. You don't want people to think you're paedophile."

"We don't go out often, no risk about that. And what do you mean; paedophile?"

Kausner shrugged.

"It's kind of obvious you have feelings for her. I know you didn't act on it and won't as long as she's like… this; but it's just a warning."

Deciding the heart-to-heart conversation was leading them to dark waters, the blond man decided to change subject and blurted the first thing running through his mind.

"Want a cup of tea?" he asked, also as a peace offering. A large grin grew on Kausner's lips.

"Now you speak my language."

-SF-

"JANE!"

His eyes opened wide. The blond man straightened up in his bed, checking his surroundings quickly. Where was he already? In Lisbon's room; she had a night terror during the night. Where was Lisbon? Alongside him. Why was she staring at him like that? It wasn't the first time she woke up with him and last night, he remembered she had quite a fever when he checked on her. Apparently she was feeling better…

"Yes Teresa?"

"What are you doing in my bed? A… and since when are you calling me by my first name?"

So that was the change Michel was talking about? He wondered. Still in her body of fifteen years old, yet with her actual mind?

"Jane, I'm waiting!"

He blinked out of his daydream and sighed. Now how was he going to get out of this one?

"How old are you?" he asked bluntly. Lisbon's shock increased.

"Excuse-me?"

"How old are you?" he repeated patiently. "C'mon Lisbon, you can answer that one."

Her eyes narrowed.

"You know how old I am, We celebrated my birthday two weeks ago. You bought me a swing to put in... whatever place I could put it in."

That was four weeks ago, he wanted to correct her but bit back the reply.

"Check yourself in the mirror."

She glared at him again, suspecting some stunt of some sort before stepping out of the bed. When she stood in front of the glass, she froze. Once again Jane knew he just should have kept a camera at hand's length. Her face fell.

"Wh… what is… Jane what the hell happened!"

Her voice was slightly panicked, yet admirably held back. Jane didn't know if he had to feel amused or annoyed and fell on his back staring at the ceiling.

"You want the short or the long version?"

Lisbon is "back"! xD

Hope you liked it and thanks for reading so far! :D