Saturday 11 February

8st 13, alcohol units 4, cigarettes 18, calories 1467(but burnt off by shopping)

Just got home from shopping to message from my dad asking if I would meet him for lunch on Sunday. I went hot and cold. My dad does not come up to London to have lunch with me on his own on Sundays. He has roast beef, or salmon and new potatoes, at home with Mum.

'Don't ring back,' the message said. 'I'll just see you tomorrow.'

What's going on? I went round the corner, shaking, for some Silk Cut. Got back to find message from Mum. She too is coming to see me for lunch tomorrow, apparently. She'll bring a piece of salmon with her, and will be here about 1 o'clock.

Rang Jamie again and got 20 seconds of Bruce Springsteen and then Jamie growling, 'Baby, I was born to run . . . out of time on the answerphone.'

Sunday 12 February

8st 13, alcohol units 5, cigarettes 23 (hardly surprising), calories 1647.

11 a.m. Oh God, I can't have them both arriving at the same time. It is too Brian Rix for words. Maybe the whole lunch thing is just a parental practical joke brought on by over-exposure of my parents to Noel Edmonds, popular television and similar. Perhaps my mother will arrive with a live salmon flipping skittishly on a lead and announce that she is leaving Dad for it. Maybe Dad will appear hanging upside-down outside the window dressed as a Morris dancer, crash in and start hitting Mum over the bead with a sheep's bladder; or suddenly fall face downwards out of the airing cupboard with a plastic knife stuck in his back. The only thing which can possibly get everything back on course is a Bloody Mary. It's nearly the afternoon, after all.

12.05 p.m. Mum called. 'Let him come then,' she said. 'Let him bloody well have his own way as usual.' (My mum does not swear. She says things like 'ruddy' and 'Oh my godfathers'.) 'I'll be all right on my bloody own. I'll just clean the house like Germaine sodding Greer and the Invisible Woman.' (Could she possibly, conceivably, have been drunk? My mum has drunk nothing but a single cream sherry on a Sunday night since 1952, when she got slightly tipsy on a pint of cider at Mavis Enderby's twenty-first and has never let herself or anyone else forget it. 'There's nothing worse than a woman drunk, darling.')

'Mum. No. Couldn't we all talk this through together over lunch?' I said, as if this were Sleepless in Seattle and lunch was going to end up with Mum and Dad holding hands and me winking cutely at the camera, wearing a luminous rucksack.

'Just you wait,' she said darkly. 'You'll find out what men are like.'

'But I already . . . ' I began.'

'I'm going out, darling,' she said. I'm going out to get laid.'

At 2 o'clock Dad arrived at the door with a neatly folded copy of the Sunday Telegraph. As he sat down on the sofa, his face crumpled and tears began to splosh down his cheeks.

'She's been like this since she went to Albufeira with Una Alconbury and Audrey Coles,' he sobbed, trying to wipe his cheek with his fist. 'When she got back she started saying she wanted to be paid for doing the housework, and she'd wasted her life being our slave.' (Our slave? I knew it. This is all my fault. If I were a better person, Mum would not have stopped loving Dad.) 'She wants me to move out for a while, she says, and . . . and. . . . ' He collapsed in quiet sobs.

'And what, Dad?'

'She said I thought the clitoris was something from Nigel Coles's lepidoptery collection.'

Monday 13 February

9st 1, alcohol units 5, cigarettes 0 (spiritual enrichment removes need to smoke – massive breakthrough), calories 2845.

Though heartbroken by my parents' distress, I have to admit parallel and shameful feeling of smugness over my new role as carer and, though I say it myself, wise counselor. It is so long since I have done anything at all for anyone else that it is a totally new and heady sensation. This is what has been missing in my life. I am having fantasies about becoming a Samaritan or Sunday school teacher, making soup for the homeless (or, as my friend Tom suggested, darling mini-bruschettas with pesto sauce), or even retraining as a doctor. Maybe going out with a doctor would be better still, both sexually and spiritually fulfilling. I even began to wonder about putting an ad in the lonely hearts column of the Lancet. I could take his messages, tell patients wanting night visits to bugger off, cook him little goat cheese souffles, then end up in a foul mood with him when I am sixty, like Mum.

Oh God. Valentine's Day tomorrow. Why? Why? Why is entire world geared to make people not involved in romance feel stupid when everyone knows romance does not work anyway. Look at royal family. Look at Mum and Dad.

Valentine's Day purely commercial, cynical enterprise, anyway. Matter of supreme indifference to me.

Tuesday 14 February

9st, alcohol units 2 (romantic Valentine's Day treat 2 bottles Becks, on own, huh), cigarettes 12, calories 1545.

8 a.m. Oooh, goody. Valentine's Day. Wonder if the post has come yet. Maybe there will be a card from Daniel. Or a secret admirer. Or some flowers or heart-shaped chocolates. Quite excited, actually.

Brief moment of wild joy when discovered bunch of roses in the hallway. Daniel! Rushed down and gleefully picked them up just as the downstairs-flat door opened and Vanessa came out.

'Ooh, they look nice,' she said enviously. 'Who are they from?'

'I don't know!' I said coyly, glancing down at the card. 'Ah . . . I tailed off. 'They're for you.'

'Never mind. Look, this is for you,' said Vanessa, encouragingly. It was an Access bill.