Who is Dr. Judson Fullerton in the novel, Almost Paradise?

Dr. Judson Fullerton is a psychiatrist who runs a phobia clinic. It is this clinic that helps Jane overcome her phobia and allow her to begin leaving the house. Although Judson is clearly an apathetic, uncaring man, Jane quickly develops a crush on him. With her marriage falling apart, Jane begins to have an affair with Judson. The affair is highly satisfying sexually, providing Jane with experiences she never had with Nicholas, but soon grows stale as Jane begins to see exactly what kind of a man Judson is. Jane ends the affair and flies to London a month later to try to win Nicholas back.