天若有情天亦老我班情侣真不少
[tiān ruò yŏu qíng tiān yì lăo wŏ bān qíng lǚ zhēn bù shăo]
A phrase combined with classical Chinese poetic expression and casual remarks on life. The first half 'if the heaven had feeling, it would also grow old' comes from ancient poetry symbolizing the eternity and profundity of love. And the latter part means there are many couples in my class