When "great" turns into "just ok"

I have a very hot favorite who already seems to be taking things for granted, even though it has only been a few months. First, she assumes that I will see her each week. Then, when I finally agree to a direct meetup and take her out for dinner rather than seeing her at the club first, she orders the largest steak on the menu, which is meant for 2 people, and takes most of it home. But ok, I can live with those things. But, most importantly, the sex is becoming mechanical and rushed. She knows what really gets me going, but either doesn't remember or cannot be bothered to do it.

It is obviously time to move on. I get bored with them fast enough even when they are motivated to please, nevermind when the experience is mediocre.