9st 3 (still in very good cause), alcohol units 3 (v.g.), cigarettes 32 (v.p. bad, particularly since first day of giving up), calories 1800 (g.), lottery tickets 4 (fair), no. of serious current affairs articles read 1.5, 1471 calls 22 (OK), minutes spent having cross imaginary conversations with Daniel 120 (v.g.), minutes spent imagining Daniel begging me to come back 90 (excellent).

Right. Determined to be v. positive about everything. Am going to change life: become well informed re: current affairs, stop smoking entirely and form functional relationship with adult man.

8:30 a.m. Still have not had fag. Vg.

8:35 a.m. No fags all day. Excellent.

8:40 a.m. Wonder if anything nice has come in post?

8:45 a.m. Ugh. Hateful document from Social Security Agency asking for ?1452. What? How can this be? Have not got ?1432. Oh God, need fag to calm nerves. Mustn't. Mustn't.

8:47 a.m. Just had fag. But no-smoking day does not start officially till have got dressed. Suddenly start thinking of former boyfriend Peter with whom had functional relationship for seven years until finished with him for heartfelt, agonizing reasons can no longer remember. Every so often – usually when he has no one to go on holiday with – he tries to get back together and says he wants us to get married. Before know where am, am carried away with idea of Peter being answer. Why be unhappy and lonely when Peter wants to be with me? Quickly find telephone, ring Peter and leave message on his answerphone-merely asking him to give me call rather than whole plan of spending rest of life together, etc.

1:15 p.m. Peter has not rung back. Am repulsive to all men now, even Peter.

4:45 p.m. No-smoking policy in tatters. Peter finally rang. 'Hi, Bee.' (We always used to call each other Bee and Waspy.) 'I was going to ring you anyway. I've got some good news. I'm getting married.'

Ugh. V. bad feeling in pancreas area. Exes should never, never go out with or marry other people but should remain celibate to the end of their days in order to provide you with a mental fallback position.

'Bee?' said Waspy. 'Bzzzzzzz?'

'Sorry,' I said, slumping dizzily against the wall. 'Just, um, saw a car accident out of the window.' I was evidently superfluous to the conversation, however, as Waspy gushed on about the cost of wedding cakes for about twenty minutes, then said, 'Have to go. We're cooking Delia Smith venison sausages with juniper berries tonight and watching TV.'

Ugh. Have just smoked entire packet of Silk Cut as act of self-annihilating existential despair. Hope they both become obese and have to be lifted out of the window by crane.

5:45 p.m. Trying to concentrate hard on memorizing names of Shadow Cabinet to avoid spiral of self-doubt. Have never met Waspy's Intended of course but imagine giant thin blond rooftop giantess-type who rises at five each morning, goes to gym, rubs herself down with salt then runs international merchant bank all day without smudging mascara..

Realize with sinking humiliation that reason have been feeling smug about Peter all these years was that I finished with him and now he is effectively finishing with me by marrying Mrs. Giant Valkyrie bottom. Sink into morbid, cynical reflection on how much romantic heartbreak is to do with ego and miffed pride rather than actual loss, also incorporating subthought that reason for Fergy's insane overconfidence may be that Andrew still wants her back (until he marries someone else, har har).

6:45 p.m. Was just starting to watch the 6 o'clock news, notebook poised, when Mum burst in bearing carrier bags. 'Now, darling,' she said sailing past me into the kitchen. 'I've brought you some nice soup, and some smart outfits of mine for Monday!' She was wearing a lime green suit, black tights and highheeled court shoes. She looked like Cilla Black on Blind Date.

'Where do you keep your soup ladles?' she said, banging cupboard doors. 'Honestly, darling. What a mess! Now. Have a look through these bags while I heat up the soup.'

Deciding to overlook the fact that it was a) August b) boiling hot c) 6:15 and d) I didn't want any soup, I peered cautiously into the first carrier bag, where there was something pleated and synthetic in bright yellow with a terracotta leaf design. 'Er, Mum . . . ' I began, but then her handbag started ringing.

'Ah, that'll be Julio. Yup, yup.' She was balancing a portable phone under her chin now and scribbling. 'Yup, yup. Put it on, darling,' she hissed. 'Yup, yup. Yup. Yup.'

Now I have missed the news and she has gone off to a Cheese and Wine party, leaving me looking like a door-to-door cosmetics saleswoman in a bright blue suit with slithery green blouse underneath and blue eyeshadow right up to my eyebrows.

'Don't be silly, darling,' was her parting shot. 'If you don't do something about your appearance you'll never get a new job, never mind another boyfriend!'

Midnight. After she'd gone, called Tom, who took me to a party a friend of his from art school was having at the Saatchi Gallery to stop me obsessing.

'Bridget,' he muttered nervously as we walked into the white hole and sea of grunge youths. 'You know it's unhip to laugh at Installation, don't you?'

'OK, OK,' I said sulkily. 'I won't make any dead fish jokes.'

Someone called Gav said 'Hi': twenty-two maybe, sexy, in a shrunken T-shirt revealing a chopping-board-like midriff.

'It's really, really, really, really amazing,' Gav was saying. 'It's, like, a sullied Utopia with these really really really good echoes of, like, lost national identities.'

He led us excitedly across the big white space to a toilet paper roll: inside out with the cardboard outside the paper.

They looked at me expectantly. Suddenly I knew I was going to cry. Tom was now drooling over a giant bar of soap bearing the imprint of a penis. Gav was staring at me. 'Wow, that is, like, a really, really, really wild . . . ' he whispered reverently as I blinked back tears, '. . . response.'

'Just going to the loo,' I blurted, rushing away past a configuration of sanitary-napkin bags. There was a queue outside a Portaloo, and I joined it, shaking. Suddenly, just when it was almost my turn, I felt a hand on my arm. It was Daniel.

'Bridge, what are you doing here?'

'What does it look like?' I snapped. 'Excuse me, I'm in a hurry.' I burst into the cubicle and was just about to get on with it when I realized the toilet was actually a molding of the inside of a toilet, vacuum-packed in plastic. Then Daniel put his head round the door.

'Bridge, don't wee on the Installation, will you?' he said, and closed the door again.

When I came out he had vanished. I couldn't see Gav, Tom or anyone I knew. Eventually I found the real toilets, sat down and burst into tears, thinking I wasn't fit to be in society anymore, and just needed to get away till I stopped feeling like this. Tom was waiting outside..

'Come and talk to Gav,' he said. 'He's really, like, into you.' Then he took one look at my face and said. 'Oh shit, I'll take you home.'

It's no good. When someone leaves you, apart from missing them, apart from the fact that the whole little world you've created together Collapses, and that everything you see or do reminds you of them, the worst is the thought that they tried you out and, in the end, the whole sum of parts adds up to you got stamped REJECT by the one you love. How can you not be left with the personal confidence of a passed-over British Rail sandwich?