‘No, of course I didn’t.’ I press my hands against my stomach, each chord striking my skin like a thousand tiny needles. Finally, the music changes, the first notes of ‘At Last’ by Etta James fill the room and Rupert pulls me back into his arms. I try to go with it, but although my feet are moving, I am stiff, my joints like cardboard.

‘Darling, try and enjoy it. This is our first dance, everyone is watching. I’m sorry about the mistake, I don’t know what happened,’ Rupert murmurs into my ear, and to anyone watching it looks as though he’s whispering sweet nothings.

‘Relax?’ I whisper back, pinning a smile onto my face, even though smiling is the last thing I feel like doing. The moment has been spoiled now. ‘That was the song you had your first dance to with Caro, wasn’t it?’ I try to swallow down the tears that make it difficult to speak. ‘Amanda mentioned it when we were discussing what song we were going to have over lunch one day.’

‘Oh, Em, I really am sorry. I have no idea how this happened. You must know I would never have changed the song, not without talking to you, and certainly not to that song.’

‘No. No, of course I know that.’ I take a deep breath, trying to push away the anger that bubbles beneath the surface. ‘But if you didn’t change it, and I didn’t change it, then who did? Someone here must have done it deliberately to upset me. You. Us.’

I haven’t told him about the letter, or the text message I received in Brighton, worried as I am that it might be Harry trying to get in contact with me, but now I’m regretting it. I should have showed him – maybe then he would realize just why I’m so upset now.

‘No one would do that – they’re our friends, Em! It’s more likely the band got us mixed up with another couple. It’s the end of the wedding season, darling, there are bound to be a few hiccups. Please, let’s just forget it, and enjoy our day. Yes?’ He nuzzles into my neck as he whisks me across the floor and I can’t help but melt a little. I don’t want to argue with him, especially not on our wedding day and in front of our guests, so I just nod in agreement, forcing a smile and giving our guests a little bow at the end of the dance.

Once I see that Rupert is busy talking to some old university friends, I take a moment when the band are on a break to snag the singer and ask him about the song change.

‘You asked me to change it,’ he says, slightly belligerently.