BTS Jin and Jungkook‘s friendship could be described as very demure… [Video could not be displayed] ….very cutesy… [Video could not be displayed] …and very mindful, if by “demure,” “cutesy,” and “mindful” you mean “chaotic,” “competitive,” and “always entertaining.” Your browser does not support video. Although Jin and Jungkook aren’t together–the latter is currently serving in…