'Hi,' I said, hoping to make amends for my mother's rudeness. He looked round, completely ignored me and looked back again.

'Hi,' I said again and poked him.

'Oh, hi, I'm sorry. I didn't see you,' he said.

'It's a great party,' I said. 'Thanks for inviting me.'

He stared at me for a moment. 'Oh, I didn't,' he said. 'My mother invited you. Anyway. Must see to the, er, placement. Very much enjoyed your Lewisham fire station report, by the way,' and he turned and strode upstairs, dodging between the diners and excusing himself while I reeled. Humph.

As he reached the top of the stairs, Natasha appeared in a stunning gold satin sheath, grabbing his arm possessively and, in her haste, tripping over one of the candles which spilled red wax on the bottom of her dress. 'Fack,' she said. 'Fack.'

As they disappeared ahead I could hear her telling him off. 'I told you it was ridiculous spending all afternoon arranging candles in dangerous places for people to fall over. Your time would have been far better spent ensuring that the placement was . . . '

Funnily enough, the placement turned out to be rather brilliant. Mum was sitting next to neither Dad nor Julio but Brian Enderby, whom she always likes to flirt with. Julio had been put next to Mark Darcy's glamorous fifty-five-year-old aunt, who was beside herself with delight. My dad was pink with pleasure at sitting next to a stunning Faye Dunaway look-alike. I was really excited. Maybe I would be sandwiched between two of Mark Darcy's dishy friends, top barristers or Americans from Boston, perhaps. But as I looked for my name on the chart a familiar voice piped up beside me.

'So how's my little Bridget? Aren't I the lucky one? Look, you're right next to me. Una tells me you've split up with your feller. I don't know! Dun! When are we going to get you married off?'

'Well I hope, when we do, I shall be the one to do the deed,' said a voice on my other side. 'I could do with a new vimper. Mmm. Apricot silk. Or maybe a nice thirty-nine-button souterne from Gamirellis.'

Mark had thoughtfully put me between Geoffrey Alconbury and the gay vicar.

Actually, though, once we all got a few drinks down us conversation was by no means stilted. I was asking the vicar what he thought about the miracle of Indian statues of Ganesh the Elephant God taking in milk. The vicar said the word in ecclesiastical circles was that the miracle was due to the effect on terracotta of a hot summer followed by cold weather.

As the meal broke up and people started to make their way downstairs for the dancing, I was thinking about what he said. Overcome with curiosity, and keen, also, to avoid having to do the twist with Geoffrey Alconbury, I excused myself, discreetly taking a teaspoon and milk jug from the table, and nipped into the room where the presents had – rather proving Una's point about the showy element of things – already been unwrapped and put on display.

It took me a while to locate the terracotta oil burner, as it had been shoved near the back, but when I did I simply poured a little milk onto the teaspoon, tilted it and held it against the edge of the hole where you put the candle in. I couldn't believe it. The Essential Oil Burner was taking in milk. You could actually see the milk disappearing from the teaspoon..

'Oh my God, it's a miracle,' I exclaimed. How was I to know that was when Mark Darcy would be bloody well walking past?

'What are you doing?' he said, standing in the doorway.

I didn't know what to say. He obviously thought I was trying to steal the presents.

'Mmm?' he said. 'The Essential Oil Burner I bought your mother is taking in milk,' I muttered sulkily.

'Oh, don't be ridiculous,' he said, laughing.

'It is taking in milk,' I said indignantly. 'Look.' I put some more milk on the teaspoon, tilted the spoon and sure enough the oil burner slowly started to take it in.

'You see,' I said proudly. 'It's a miracle.'

He was pretty impressed, I can tell you. 'You're right,' he said softly. 'It is a miracle.'

Just then Natasha appeared in the doorway. 'Oh, hi,' she said, seeing me. 'Not in your bunny girl outfit today, then,' and then gave a little laugh to disguise her bitchy comment as an amusing joke.

'Actually we bunnies wear these in the winter for warmth,' I said.

'John Rocha?' she said, staring at Jude's dress. 'Last autumn? I recognize the hem.'

I paused to think up something very witty and cutting to say, but unfortunately couldn't think of anything. So after a bit of a stupid pause I said, 'Anyway, I'm sure you're longing to circulate. Nice to see you again. Byee!'

I decided I needed to go outside for a little fresh air and a fag. It was a wonderful, warm, starry night with the moon lighting up all the rhododendron bushes. Personally, I have never been keen on rhododendrons. They remind me of Victorian country houses up north from D. H. Lawrence where people drown in lakes. I stepped down into the sunken garden. They were playing Viennese waltzes in a rather smart fin de millennium sort of way. Then suddenly I heard a noise above. A figure was silhouetted against the French windows. It was a blond adolescent, an attractive public schoolboy-type.

'Hi,' said the youth. He lit a cigarette unsteadily and stared, heading down the stairs towards me. 'Don't suppose you fancy a dance? Oh. Ah. Sony,' he said, holding out his hand as if we were at the Eton open day and he was a former Home Secretary who had forgotten his manners: 'Simon Dalrymple.'

'Bridget Jones,' I said, holding out my hand stiffly, feeling as if I were a member of a war cabinet.

'Hi. Yah. Really nice to meet you. So can we have a dance?' he said, reverting to the public schoolboy again.

'Well, I don't know, I'm sure,' I said, reverting to pissed floozy and giving an involuntary raucous laugh like a prostitute in a Yates Wine Lodge.

'I mean out here. Just for a moment.'

I hesitated. I was flattered, to tell you the truth. What with this and performing a miracle in front of Mark Darcy it was all starting to go to my head.

'Please,' pressed Simon. 'I've never danced with an older woman before. Oh, gosh, I'm sorry, I didn't mean . . . ' he went on, seeing my face. 'I mean, someone who's left school,' he said, seizing my hand passionately. 'Would you mind? I'd be most awfully, awfully grateful.'

Simon Dalrymple had obviously been taught ballroom dancing from birth, so it was rather nice being expertly guided to and fro, but the trouble was, he seemed to have, well, not to put too fine a point on it, the most enormous erection I've ever had the good fortune to come across, and us dancing so close it was not the sort of thing one could pass off as a pencil case.

'I'll take over, now, Simon,' said a voice.

It was Mark Darcy.

'Come along. Back inside. You should be in bed now.'

Simon looked completely crushed. He blushed scarlet and hurried back into the party.

'May I?' said Mark, holding out his hand to me.

'No,' I said, furious.

'What's the matter?'

'Um,' I said, flailing for an excuse for being so angry. 'That was a horrible thing to do to a young whippersnapper, throwing your weight about and humiliating him like that at a sensitive age.' Then, noticing his baffled expression, I gabbled on. 'Though I do appreciate your asking me to your party. Marvelous. Thank you very much. Fantastic party.'

'Yes. I think you've said that,' he said, blinking fast. The truth is, he looked rather agitated and hurt.

'I . . . He paused, then started pacing around the patio, sighing and running his hand through his hair. 'How's the . . . Have you read any good books lately?' Unbelievable.

'Mark,' I said. 'If you ask me once more if I've read any good books lately I'm going to eat my head. Why don't you ask me something else? Ring the changes a bit. Ask me if I've got any hobbies, or a view on the single European currency, or if I've had any particularly disturbing experiences with rubber.'