I want to cheat on my wife
Why would you cheat on your wife?
The sex has become boring.
You shouldn't cheat on your wife. You should talk to her and see if you can work things out.
It's probably too late, why bother talking when I can get all the action I need from someone else.
But don't you think it's a little immoral to cheat on your wife behind her back? You should just leave her if you don't love her anymore.