 Another significant relationship he has is with Erica Kane, and although it does not end in marriage, David grows very close to Erica's daughter, Bianca Montgomery.When Bianca suffers heart problems as the result of her eating disorder (anorexia nervosa) it is David who treats her and ultimately helps her survive.When Bianca is grieving for the death of Frankie Stone, David plans a memorial for his cousin and offers to involve Bianca.