Did Robert love his wife?

He was, in his way, a family man. He loved his family, but he also loved the thrill of out-negotiating other people, the power and status his money conferred upon him, and seeing the fruits of his "hard work." In the end, he is willing to take his losses in order to square things with his investors and ensure his children's future. So he is not an entirely immoral man or incapable of love. His mistresses provide him a reprieve from balancing family, public persona, and his company, and he enjoys the illusion of romance (as when he and his mistress take off together). He will never willingly leave his wife. She is part and parcel of all that he has built up. In one brief scene, he reminds her of earlier, leaner days together,so that we get some sense of their intimacy, though she says this is not like him. Still, she is tough too and follows her own path (drinking, "trainers" which could mean her own affairs,her charities, and protecting family). In a sense, they have an ordinary marriage, held together by family ties, money, convenience, social obligations and status--including the occasional (for his birthday) physical intimacy. The only difference between their marriage and many others' is that they live in ultra luxury, have tremendous assets at stake, and are both very driven, rather than relaxing into late middle age. He probably loves her but is not in love with her. Theirs is a partnership, an agreement, up to the time that she feels he has violated his contract with her.