But I can’t leave my sister alone with Toby. I’m terrified she’s going to lie to him and try to ruin our wedding. ‘Toby, I’m so sorry I couldn’t stop her coming to see you. She’s had too much to drink and she’s talking absolute rubbish. Let me call my dad. Can I use your phone?’

‘I can’t believe you’re actually marrying her!’ Dina spits at Toby. ‘How could you go through with it? How could you think I would let you!’

And now it’s my turn to glance from one to the other. Dina is angry at him, and Toby appears to be terrified. But what is he terrified of? I’m suddenly very hot and my dress feels too tight. Something’s going on here, and I don’t think it’s anything to do with my schooldays.

‘Shall I tell her, or will you?’ Dina asks my fiancé, who is currently several shades whiter than his shirt.

‘Tell me what?’ My voice is little more than a whisper. The room has fallen silent. All I can hear is my heart beating.

‘Zoe… I’m…’ Toby’s voice trails off.

‘Toby?’ I suddenly realise that Dina’s visit is nothing to do with blackmailing me. It’s to do with Toby. Her and Toby.

I grit my teeth and feel something akin to anger building, but it’s not like any anger I’ve experienced before. It boils up from the depths of my core. A dark realisation that I’ve been made an absolute fool of by the two people I’m closest to in the world. The horror that my life as I thought it would be, is over. That nothing will ever be the same again. The love of my life is a fraud. A cheater. A bastard. But I can’t lose it yet. First, I need to hear him say it.

‘Zoe,’ he says more firmly this time. ‘You have to believe that I love you. It meant nothing.’

‘Nothing?’ Dina snarls. ‘You prick!’ She turns to me. ‘We’ve been seeing each other for months. He loves me.’ She takes a step closer to him.

‘But you were in Thailand,’ I say stupidly. ‘You told me you couldn’t get home for the wedding.’

Her lip curls. ‘I lied.’ She marches right up to Toby now and shoves at his chest. ‘You said you wouldn’t go through with the wedding! You promised me.’

‘I didn’t. That was when we first met, and I was stupidly seduced by you. But I made it clear that it was over. A mistake. I’m in love with Zoe. I always have been. We should never have—’

‘You bastard!’ Dina starts beating him with her fists. Slowly and ineffectually at first. But then she warms up, pulling at his hair, his clothes, kicking him, yelling and screaming all kinds of profanities.