The no contact rule is classified as a period of time when you and your boyfriend have broken up, and you don’t contact him at all in that no contact period.
This is to give both of you time and spaced apart from each other. If it is successfully done correctly, this no contact rule helps you to heal from the breakup, and to start growing your own life back as a person. The no contact period can be a month, two months, three months.
Often during this no contact phase, a girlfriend or boyfriend might believe they made a mistake to dump you and they want to come back and try again.
It will be up to you whether you will allow that or not!