Nicely put, however I don't really see it as 'introverted' way, to me it's just a deep sadness of someone seeing his only friend moving on, while he stays still, incapable to, or doesn't want to, at the same time Dang it, I know this is the price to pay when I let myself getting close to someone. It is general to everyone but I agree it's somewhat relevant as introverts tend to treasure relationship more deeply because we would only commit to very few, and brings out the vulnerability of usual 'is that something wrong with me? Should I do what everybody else is doing?
As accent, I find it easier to understand English and American English in the shows, but have more problem understanding the regular human. Not sure why. Like I understand Sherlock well, but ??hah?? when I heard a group of British first hand.