Just because you miss someone, it doesn't mean you should go back to them. Sometimes you have to just keep missing them until you wake up one day and realize you really don't need them in your life anymore.
Ignore User
Both you and this user will be prevented from:
Messaging each other
Commenting on each other's stories
Dedicating stories to each other
Following and tagging each other
Note: You will still be able to view each other's stories.