Maybe you can read this: https://www.psychologytoday.com/us/blog/liv...ll-love-your-ex

i think it helps.

Ya, this is a good one.. the best is hide the facebook notification or updates from her. There is a button for that. hide this person for a moment.

For the whatapps, just delete the number so you wont trace her timing or photos which making you miss her... Just stop everything and one day she will regret it....

Sometimes when you are too available for them, they take things for granted.

Cheers bro!!
In additions, my ex knew that I didnt see all her posts or vanishing for some times, she kind of disappointed and angry. Then I replied her this:

In the event, I saw you in good conditions, my heart will still be broken because I thought the one supposed to be with you during good times shall be me,
Also, in the event, I saw you sad or in bad conditions, my heart will still be sour because during bad times, I'm not there for you to protect you and loved you.
So I rather don't know or don't care anything about you in order for me to slowly walk away from this relationship. Are you happy with the explanations now?
If you tell this, I guaranteed they will kept themselves quiet.