人心久不腻人情久不散
[rén xīn jiŭ bù nì rén qíng jiŭ bù sàn]
"Long-Term Human Relationships Are Not Tiresome Nor Will True Feelings Dissolve Over Time". In this net name, the person is probably talking about genuine and lasting friendships that won't easily become tiresome or dissolve as long as sincere affection exists.