Who is Armando in the novel, African Passions?

Armando is Teresa's boyfriend. He is forty-four years old and a junior partner in a law firm. He is ten years older than Teresa. In the first lines of the story, Armando is covertly described as a fake. He is pretending to be asleep. Shortly afterward, he also pretends to have to make a business telephone call when, it is suggested, he is probably calling another woman.