i don't see any reason for you two to break the friendship, you shouldn't if you're just scared of bothering your sister, heck i would have become a hermit ages ago

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uǝzoɹɟ is Asia's Highlight Member for the day: I have encountered and spoken with so many people, and I used to think I can pretty much know what to expect. But I have genuinely been taken aback with this young fella - mature beyond his years and exuding a confidence and sophistication far greater than his peers; you've already earnede my respect, young sir ^____^