Also asked, why then I think Cassio is an honest man?
If they're not honest, they shouldn't look like they are! Certain, men should be what they seem. Absolutely, people should be what they appear to be. Why then I think Cassio's an honest man.
Similarly, who said the Moor is of a free and open nature? Cassio is a smooth talker and a good-looking guy, the sort of man that people would expect to be a seducer. The Moor is open and straightforward. He thinks any man who seems honest is honest. People like that are easy to manipulate.
Likewise, people ask, why did I marry this honest creature doubtless?
This honest creature doubtless/Sees and know more, much more, than he unfolds. Do not you chide. I have a thing for you.
Who dotes yet doubts?
175Who dotes, yet doubts— suspects, yet soundly loves! Beware of jealousy, my lord! It's a green-eyed monster that makes fun of the victims it devours. The man who knows his wife is cheating on him is happy, because at least he isn't friends with the man she's sleeping with.