I want to sleep with a married woman
Why would you do that? She has a husband.
I don't care about her husband and she always talks bad about him as it is.
That is immoral of you to do. It's wrong to sleep with another person's spouse. Even though she may talk bad about it she is still married and you should respect that.
I don't want to hear about it. Don't you dare tell me how to live my life.
No one is telling you how to live just pointing out that it is wrong to sleep with someone who is married. It takes two to do it, so she should know that it is wrong as well.