A real breakup is not about deleting or blocking someone, but when you think of this person, you feel calm in your heart, and when you know that the other person has started a new relationship, you won't be in pain or sadness.
In this world, there are very few people who can experience love once and stay together for life. Most of us will experience disappointing relationships and meet the person who makes us miserable.
If after breaking up, two people still have no connection and keep in touch, even if they are deleted and blocked, they still find a suitable reason to add them back, secretly inquire about each other's news, and often "see each other's lives", then when can you really let go?