明明很快乐却假装舍不得明明很难过却假装很洒脱
[míng míng hĕn kuài lè què jiă zhuāng shè bù dé míng míng hĕn nán guò què jiă zhuāng hĕn să tuō]
'Clearly very happy but pretend to be unwilling. Clearly very sad but pretending to be nonchalant.' This describes the contrast between one's actual feelings and outward appearances, showing complex emotions and possibly emotional struggles.