Unexpectedly that statement jolted Billie because Gio spent most of his time in Greece. No, he was definitely not offering her a fairy-tale for-ever marriage because he was clearly already envisaging a future in which they were separated and sharing custody of their son. Billie paled, feeling as though he had slapped her in the face with reality, but ironically it was her own silly thoughts she needed to put a guard on, she conceded painfully. Of course, Gio wasn’t suggesting a real marriage and a whitewash marriage would naturally have a sell-by date beyond which it was no longer required.

‘I need to think about all this,’ Billie admitted tightly. ‘You’re talking about turning my life upside down.’

‘And my own,’ Gio added softly. ‘None of this was on my bucket list either.’

That obvious fact struck Billie like a second slap when she least required it. She did not need the reminder that Gio would never have chosen to marry her were it not for Theo. That reality was engraved on her soul because he had once rejected her in favour of Calisto. She bent down and scooped up Theo, loving the warm cuddliness of his solid little body and using it as a comfort to the chill spreading through her stomach. ‘I need to change him,’ she explained, walking away to scoop up the holdall and locate the nearest bathroom.

Why were women so complicated? Gio thought in seething frustration. He had offered her what he had assumed she had always wanted and she was behaving as if he had offered her a dirty deal. What did she have to think about? How many women had to run off to the bathroom and change a nappy before they could decide whether or not they wanted to marry a billionaire? Was it possible that she suspected that he had a motivation that he wasn’t sharing?

His lean, strong face set like granite. Admittedly, he had not told her the whole truth, could not possibly tell her the whole truth because that would make her fear him. He was fighting for what he believed in, fighting for what Theo needed most. In every battle there were winners and losers and Gio had no plans to be a loser or to stand by powerless while Theo received less than his due. In the rarefied world of the super-rich Billie could only be a trusting babe in arms. She was so ignorant of the utter ruthlessness that could make Theo a target for the greedy that she had no concept of how best to protect their son. But Gio knew and there was nothing he would not do to achieve that objective.

Billie hovered by the vanity while Theo crawled across the tiled floor and pulled himself up on the side of the bath. Her brain was in turmoil, inescapable fear rammed down behind every thought. Gio wanted her to marry him for Theo’s sake and she wanted to give her son the best possible start in life. But there would be a steep price to pay for such a rise in her social status, she acknowledged unhappily. She would inevitably be an embarrassment to Gio, and his precious family were certain to disapprove of her. But then doubtless Gio planned to pension her off once all the legalities and his son’s place in life had been affirmed. So, it wouldn’t be a real for-ever marriage and would probably be set aside once Theo was old enough to go and visit his father without his mother in tow. Everything, she assumed, would happen exactly the way Gio wanted it to happen because he left nothing to chance. She foresaw that reality and froze at the terrifying prospect of being left so powerless, shorn of her home and her business. Did she have a choice? Could she trust Gio with their son’s future well-being?

Theo anchored on her hip, Billie walked back into the gracious reception room. Gio had removed his jacket, loosened his tie and pushed up the sleeves of his white silk shirt. The super-fine expensive material accentuated the muscles that rippled with his every movement and his impossibly taut, flat stomach. Her gaze lingered there, feverish memories of torrid moments awakening, fingers and lips gliding along his hard ribcage, smoothing over his abdomen before stroking down the furrow of silky hair disappearing below his waistband. Her tummy flipped and she gave herself a stern, frowning little shake as she emerged from her reverie. Black lashes flicking up on shrewd eyes, Gio completed the phone call he was making and set the phone down.

‘OK. I’ll marry you,’ Billie spelled out tautly, her colour high. ‘But that means I’m trusting you not to do anything that might harm Theo or me. If I find out that I can’t trust you I’ll leave you.’

Gio flashed her a deeply appreciative smile. She would never leave him again. Not unless she was prepared to leave her son behind with him, he reflected with immense satisfaction. She might not know it yet but her days of running were at an end.

‘And you have to be totally, one hundred per cent faithful,’ Billie decreed.