Starlights knows that VIXX's leader N is very affectionate and  caring toward s. Starlights also knows that the members sometimes hate N's actions toward them and that neither of the members actually appreciate what N did for them. They always despise his acts of affection and try their best to stay away from the supposedly 'trouble maker'. 

Little does they know how much their action and refusal hurt N until one day, N decides that he has had enough. 

He decides to stop caring.