well it's up to you if you're gonna make a difference or just suck it up and deal with it. but if you're really tired of that then i guess you should talk to them in the calmest way you can
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.