Simon looked at me as if I was mad and Daniel stared for a moment and then burst out laughing. He just laughed and laughed till he and Simon got out and then turned back and said, 'Marry me,' as the doors closed between us. Hmmmm.

8st 13 (If only could stay under 9st. and not keep bobbing up and down like drowning corpse – drowning in fat), alcohol units 2, cigarettes 17 (pre-shag nerves – understandable), calories 775 (last-ditch attempt to get down to 8st 7 before tomorrow).

8 p.m. Blimey. Computer messaging somehow whipped itself up to fever pitch. At 6 o'clock I resolutely put my coat on and left, only to meet Daniel getting into my lift on the floor below. There we were, just him and me, caught in a massive electrical-charge field, pulled together irresistibly, like a pair of magnets. Then suddenly the lift stopped and we broke apart, panting, as Simon from Marketing got in wearing a hideous beige raincoat over his fat frame. 'Bridget,' he said smirkily, as I involuntarily straightened my skirt, 'you look as if you've been caught playing with matches.'

As I left the building Daniel popped out after me and asked me to have dinner with him tomorrow. Yessss!

Midnight. Ugh. Completely exhausted. Surely it is not normal to be revising for a date as if it were a job interview? Suspect Daniel's enormously well read brain may turn out to be something of a nuisance if things develop. Maybe I should have fallen for someone younger and mindless who would cook for me, wash all my clothes and agree with everything I say. Since leaving work I have nearly slipped a disc, wheezing through a step aerobics class, scratched my naked body for seven minutes with a stiff brush; cleaned the flat; filled the fudge, plucked my eyebrows, skimmed the papers and the Ultimate Sex Guide, put the washing in and waxed my own legs, since it was too late to book an appointment. Ended up kneeling on a towel trying to pull off a wax strip firmly stuck to the back of my calf while watching Newsnight in an effort to drum up some interesting opinions about things. My back hurts, my head aches and my legs are bright red and covered in lumps of wax.

Wise people will say Daniel should like me just as I am, but I am a child of Cosmopolitan culture, have been traumatized by super-models and too many quizzes and know that neither my personality nor my body is up to it if left to its own devices. I can't take the pressure. I am going to cancel and spend the evening eating doughnuts in a cardigan with egg on it.

8st 10 (miracle: sex proved indeed to be best form of exercise), alcohol units 0, cigarettes 0, calories 200 (at last have found the secret of not eating: simply replace food with sex).

6 p.m. Oh joy. Have spent the day in a state I can only describe as shag-drunkenness, mooning about the flat, smiling, picking things up and putting them down again. It was so lovely. The only down points were 1) immediately after it was over Daniel said, 'Damn. I meant to take the car into the Citroen garage,' and 2) when I got up to go to the bathroom he pointed out that I had a pair of tights stuck to the back of my calf.

But as the rosy clouds begin to disperse, I begin to feel alarm. What now? No plans were made. Suddenly I realize I am waiting for the phone again. How can it be that the situation between the sexes after a first night remains so agonizingly imbalanced? Feel as if I have just sat an exam and must wait for my results.

11 p.m. Oh God. Why hasn't Daniel rung? Are we going out now, or what? How come my mum can slip easily from one relationship to another and I can't even get the simplest thing off the ground. Maybe their generation is just better at getting on with relationships? Maybe they don't mooch about being all paranoid and diffident. Maybe it helps if you've never read a self-help book in your life.

9st, alcohol units 5 (drowning sorrows), cigarettes 23 (fumigating sorrows), calories 3856 (smothering sorrows in fat-duvet).

Awake, alone, to find myself imagining my mother in bed with Julio Consumed with repulsion at vision of parental, or rather demi-parental sex; outrage on behalf of father; heady, selfish optimism at example of another thirty years of unbridled passion ahead of me (not unrelated to frequent thoughts of Goldie Hawn and Susan Sarandon); but mainly extreme sense of jealousy of failure and foolishness at being in bed alone on Sunday morning while my mother aged over sixty is probably just about to do it for the second . . . Oh my God. No. I can't bear to think about it.

9st (what is point of dieting for whole of Feb when end up exactly same weight at start of March as start of Feb? Huh. Am going to stop getting weighed and counting things every day as no sodding point).

My mother has become a force I no longer recognize. She burst into my flat this morning as I sat slumped in my dressing gown, sulkily painting my toenails and watching the preamble to the racing.

'Darling, can I leave these here for a few hours?' she trilled, flinging an armful of carrier bags down and heading for my bedroom.

Minutes later, in a fit of mild curiosity, I slobbed after her to see what she was doing. She was sitting in front of the mirror in an expensive-looking coffee-colored bra-slip, mascara-ing her eyelashes with her mouth wide open (necessity of open mouth during mascara application great unexplained mystery of nature).

'Don't you think you should get dressed, darling?'

She looked stunning: skin clear, hair shining. I caught sight of myself in the mirror. I really should have taken my makeup off last night. One side of my hair was plastered to my head, the other sticking out in a series of peaks and horns. It is as if the hairs on my head have a life of their own, behaving perfectly sensibly all day, then waiting till I drop off to sleep and starting to run and jump about childishly, saying, 'Now what shall we do?'

'You know,' said Mum, dabbing Givenchy II in her cleavage, 'all these years your father's made such a fuss about doing the bills and the taxes – as if that excused him from thirty years of washing-up. Well, the tax return was overdue, so I thought, sod it, I'll do it myself. Obviously I couldn't make head nor tail of it so I rang up the tax office. The man was really quite overbearing with me. `Really, Mrs. Jones,' he said. I simply can't see what the difficulty is.' I said, 'Listen, can you make a brioche?' He took the point, talked me through it and we had it done inside fifteen minutes. Anyway, he's taking me out to lunch today. A tax man! Imagine!'

'What?' I stammered, grabbing at the door frame. 'What about Julio?'

'Just because I'm "friends" with Julio doesn't mean I can't have other "fiends",' 'she said sweetly, slipping into a yellow two-piece. 'Do you like this? Just bought it. Super lemon, don't you think? Anyway, must fly. I'm meeting him in Debenhams coffee shop at one fifteen.'

After she'd gone I ate a bit of muesli out of the packet with a spoon and finished off the dregs of wine in the fudge.