Thought I was done

[pearlharbr]

You've got it wrong. You don't act like you don't care in order to get your S back. You work on detachment and drop the rope because you decide you will be in control of your own emotions and not react to someone else. You do it because it gives you space to work on becoming the best person you can be. You do it because you believe you deserve to be treated with dignity and respect and will not tolerate anything less.

And yes, if you do it for the right reasons, it works. If you do it for the wrong reasons then no, it won't work. Your S will see right through you and rightly accuse you of only doing something to get them back.