Desdemona, Emilia, and Bianca have different opinions about men and these opinions are manifest in the types of relationships that the three women have with their lovers. Desdemona feels a sense of pity for Othello after he reveals to her the hardships of his early life. She recognizes the fragility of Othello's heart and character, and she tends to his weaknesses by devoting herself to him so that he knows that she truly loves him. Their relationship, as a result, is one of mutual adoration.
Emilia, on the other hand, sees Iago as her provider and superior. Their relationship is closed and volatile--Iago hides his schemes and intentions from his wife even though he uses her as a pawn in his plans.
Finally, Bianca breaks the preconceived notions of "the prostitute" and falls in love with Cassio. Her view of love is naive, and she does not accept that Cassio has no loving feelings towards her. Their relationship is superficial, one that exists for pleasure only.