你都不晓得老子好喜欢你
[nĭ dōu bù xiăo dé lăo zi hăo xĭ huān nĭ]
You don't even know how much I like you uses casual language to express strong emotion. With informal slang term 'laozi' (a colloquial way of saying 'me' used mainly among friends or younger people), it emphasizes the deep affection towards another while lamenting that these feelings are unrecognized or unrequited.