又没人曾告诉你我爱你
[yòu méi rén céng gào sù nĭ wŏ ài nĭ]
It means 'No one told you that I love you' where the netizen seems yearning for an acknowledgment or understanding from others about their affection. They could feel misunderstood or underappreciated in terms of love expression towards someone important to them, wishing this sentiment had been recognized before it was too late.