It was genius.

‘Why didn’t you tell me on your own?’ Tess tried to lock eyes with Will, as if the strength of her gaze could bring him back from wherever he’d gone. His eyes, his strange hazel eyes, the colour of beaten copper, with thick black eyelashes, eyes that were so different from Tess’s own run-of-the-mill pale blue ones, the eyes that her son had inherited and Tess thought of as somehow belonging to her now, a beloved possession for which she gracefully accepted compliments – ‘Your son has lovely eyes.’ ‘He gets them from my husband. Nothing to do with me.’ But everything to do with her. Hers. They were hers. Will’s gold eyes were normally amused, he was always ready to laugh at the world, he found day-to-day life generally pretty funny, it was one of the things she loved about him most, but right now they were looking at her imploringly, the way Liam looked at her when he wanted something at the supermarket.

Please Mum, I want that sugary treat with all the preservatives and the cleverly branded packaging and I know I promised I wouldn’t ask for anything but I want it.

Please Tess, I want your delicious-looking cousin and I know I promised to be true to you in good times and bad, in sickness and health, but pleeeease.

No. You may not have her. I said no.

‘We couldn’t work out the right time or the right place,’ said Will. ‘And we both wanted to tell you. We couldn’t – and then we just thought, we couldn’t go any longer without you knowing – so we just . . .’ His jaw shifted, turkey-like, in and out, back and forth. ‘We thought there would never be a good time for a conversation like this.’

We. They were a ‘we’. They’d talked about this. Without her. Well, of course they’d talked without her. They’d ‘fallen in love’ without her.

‘I thought I should be here too,’ said Felicity.

‘Did you now?’ said Tess. She couldn’t bear to look at Felicity. ‘So what happens next?’

Asking the question filled her with a fresh nauseous wave of disbelief. Surely nothing was going to happen. Surely Felicity would rush off to one of her new gym classes and Will would come upstairs and talk to Liam while he had his bath, maybe get to the bottom of the Marcus problem, while Tess cooked a stir-fry for dinner; she had the ingredients ready, it was too bizarre, thinking of the little plastic-wrapped tray of chicken strips sitting staidly in the refrigerator. Surely she and Will were still going to have a glass of that half-empty bottle of wine and talk about potential men for the brand-new beautiful Felicity. They’d already canvassed so many possibilities. Their Italian bank manager. The big quiet guy who owned their local deli. Never once had Will slapped his hand to his forehead and said, ‘Of course! How could I have missed it? Me! I’d be perfect for her!’

It was a joke. She couldn’t stop thinking that the whole thing was a joke.

‘We know nothing can make this easy, or right, or better,’ said Will. ‘But we’ll do whatever you want, whatever you think is right for you and for Liam.’

‘For Liam,’ repeated Tess, dumbstruck.

For some reason it hadn’t occurred to her that Liam would have to be told about this, that Liam would have anything to do with it, or be in any way affected. Liam who was upstairs right now, lying on his stomach, watching television, his little six-year-old mind filled with giant-sized worries of Marcus.

No, she thought. No, no, no. Absolutely not.

She saw her mother appearing at her bedroom door. ‘Daddy and I want to talk to you about something.’

It would not happen to Liam the way it had happened to her. Over her dead body. Her beautiful, grave-faced little boy would not feel the loss and confusion she’d felt that awful summer all those years ago. He would not pack a little overnight bag every second Friday. He would not have to check a calendar on the refrigerator to see where he was sleeping each weekend. He would not learn to think before his spoke whenever one parent asked a seemingly innocuous question about the other.

Her mind raced.

All that mattered now was Liam. Her own feelings were irrelevant. How could she save this? How could she stop it?

‘We never, ever meant for this to happen.’ Will’s eyes were big and guileless. ‘And we want to do this the right way. The best way for all of us. We even wondered –’

Tess saw Felicity shake her head slightly at Will.

‘You’d even wondered what?’ said Tess. Here was more evidence of their talking. She could imagine the enjoyable intensity of these conversations. Teary eyes demonstrating what good people they were, how they were suffering at the thought of hurting Tess, but what choice did they have in the face of their passion, their love?

‘It’s too soon to talk about what we’re going to do.’ Felicity’s voice was firmer suddenly. Tess’s fingernails dug into her palms. How dare she? How dare she talk in her normal voice, as if this was a normal situation, a normal problem.

‘You even wondered what?’ Tess kept her eyes on Will.

Forget about Felicity, she told herself. You don’t have time to feel angry. Think, Tess, think.

Will’s face went from white to red. ‘We wondered if it would be possible for all of us to live together. Here. For Liam’s sake. It’s not like this is a normal break-up. We’re all . . . family. So that’s why we thought, I mean, maybe it’s crazy, but we just thought it might be possible. Eventually.’

Tess guffawed. A hard, almost guttural sound. Were they out of their minds? ‘You mean, I just move out of my bedroom and Felicity moves in? So we just say to Liam, “Don’t worry, honey, Daddy sleeps with Felicity now and Mummy is in the spare room?”’