Title: You just can't help yourself, can you?

Pairing: C/G

Disclaimer: Not mine.

Summary: She studied him carefully before raising her eyebrows. Out with it, Lightman.

A/N: Clearly inspired by 2*20 sneak peeks, but no spoilers really. Not betaed, be nice.

'I'm off to grab a bite, call me if you need me'

He caught a glimpse of Gillian before she hurried away along the hall.

'Say 'hi' to Burnsie-boy from me, will ya? He's gonna be late, by the way'

He could hear the unmistakable heels clickety clacking back his way. Gotcha, darling.

She peered at him from his doorway clearly not amused.

'What?'

Hand on her hip, she narrowed her eyes at him.

'He always is' The look he gave her was that of pure innocence.

Barely perceptible flash of surprise was hurriedly replaced by all too familiar blankly unreadable expression. You're getting too good at this, love. She studied him carefully before raising her eyebrows. Out with it, Lightman.

'Naw, you've just told me yourself' Raising his hand, head crooked to his left he outlined whatever signs of confirmation she clearly failed to mask. 'Oh, here it is again'

She started saying something but changed her mind before the words reached her lips. She shook her head in mock disbelief and then a brief smile lighted her features. Two can play this game. She crossed the distance between them, unceremoniously swatting his legs off his desk.

Briefly losing his balance, he grumbled 'Oi, not nice' yet obviously pleased with himself.

She placed herself on spot his legs were previously occupying at the edge of his desk leaning slightly towards him. He took his opportunity letting his eyes wander clearly appreciating the view. Eyes up, Cal.

He shrugged his shoulders nonchalantly meeting her gaze. Can't blame me. She put her arms on his shoulders closing the distance between them never breaking eye contact.

'Stop messing with my mail' the instant twitch of his lips was all the response she needed.

'Stop following me around.' They were both smiling now. He was bloody enjoying every minute of it.

'Stop staring at me when you think I'm not looking.' The last one came out barely above whisper, which he wasn't sure was entirely her intention. He furrowed his eyebrows feigning confusion.

Chin slightly up, eyes sparkling, she carried on 'And I know this how, Dr Lightman?' She mimicked his all too familiar slouch by angling her head. 'Oh, you've just told me.' Biting his cheek he struggled to imitate neutral expression to keep the one of pride and adoration well hidden.

Hand at the nape of his neck she pulled him closer until they were sharing a breath, his eyes suddenly dark and dead serious. Don't wanna go there, Foster.

Licking her lower lip, she mouthed 'Jealous' before pulling away.

He was out of his chair in no time, both hands on the sides of her body effectively trapping her to his desk. Looking in her eyes, he smiled at the peculiar dazed expression he found there. 'That I am.' He felt rather heard her letting out the breath she's been holding.

A quiet, yet Insisting beeping of her cell coming somewhere from the vicinity of his couch where she must have dropped her purse made him step away from her.

Smirking to himself, he added 'Oi Foster, now you're late for lunch'