Do you mean when does it get easier to live w/an active A? When does it get easier to live w/the lack of respect, the lying, the cheating? I don't know that it really does, ever...and I'm sorry you're being treated so badly.
In your previous thread, people listed some ideas and some resources that might be useful for you. Have you checked into some of those things? Are you doing something to help yourself besides detaching? What kind of progress are you making, regardless of the A's behavior?
In Alanon, they say "Nothing changes if nothing changes." He surely doesn't seem like he's interested in any kind of recovery and has changed nothing. That means it's pretty much up to you to make the changes you want to see, however unfair that might seem.
Take care of you and the rest will fall into place. Hang in.