My thought about Iago was right. Last time when I wrote about him, I have said that he would try to get in Othello’s head and do something to destroy the relationship between Othello, Desdemona and Cassio. As we saw he has already succeeded and got in Othello’s  head and now its matter of time that he starts having a distance between Desdemona. He played his game and Othello and Cassio got trapped and technically they are now dancing on the tip of Iago’s fingers. Now whatever Iago says they trust him like good friend, and he is smart enough to to what he had planned for them to do. He planted that his wife may have a fling with Cassio, Othello has no choice because Desdemona is forcing him to much to give Cassio his position back. Iago did it by saying something which made him like that because it was actually in front of him, like he leaving her when they got inn and he use to deliver the messages from Othello to Desdemona and he made sure the she likes him and a lot more. Now he still didn’t suspect it but he is starting too and keeping an eye on her and Cassio’s action.