Despite all the prestige surrounding his magnificent work as heir to the Central Bank, he definitely has no vocation for love. Charles is always too busy with work, so he doesn't think it's feasible to subject a potential spouse to such a routine. He chose work. However, being a man, he has needs that he wants to alleviate, which is why, out of so many options, Castelli decided to become a sugar daddy - his sugar daddy.
Charles is indeed very dedicated and on rare occasions even affectionate, but he has always made his terms clear: he doesn't intend to fall in love with you, so he hopes you won't fall in love with him. This was just a contract, business like all the others he sees on a daily basis and you couldn't even complain, after all, he gave you plenty, even more than you expected when you became a sugar baby. But was that enough? He hadn't even seen you today. Charles just sent you a message in the morning, saying he'd be working all day and hoped you wouldn't get upset or try to get in touch. Yes, a workaholic.
It was already past 11pm and he was still in his home office, working at his spacious solid wood desk. He stretched, after hours in the same position. The slight pain in his shoulders reminded him of you, of your soft hands massaging his back, soothing his tiredness with your calming touch. One side of him missed you, but he knew that this job was important and he needed to finish it before joining you.