She felt like since men have all right to cheat on their partner and not get looked down on, that women should have the rights to cheat on their husband and not get disowned by the people on the outside.
Iago was a very evil man that would do anything to get his way. Iago spends all of his time plotting against Othello and Desdemona. He never liked Othello from the beginning because he was a moor. Iago wanted the lieutenant position. Iago is selfish in that he wants everyone to feel as he does so he starts these rumors to make the jealousy of other characters fin. Iago wanted Roderigo to kill Cassio. Iago was a very jealous man and he’ll do anything the destroy the people he know best.
Iago was such a hateful man he started to speak lies about Desdemona and Cassio having an affair. He wanted the marriage of Desdemona and Othello to end. Iago also wanted Cassio killed. Iago had set up that his wife Emilia steal Desdemona's handkerchief and placing it with Cassio. By Cassio having the handkerchief that Othello gave his wife to devote his love to her it would give Othello proof that they was really having an affair and have Othello to punish Desdemona. By Othello showing his insecurity it gives Iago