对不起我骗了你
[duì bù qĭ wŏ piàn le nĭ]
'Sorry, I deceived you' conveys sincere regret for causing someone pain through deceit ('duìbuqǐ wǒ piànle nǐ'). The individual might have done so for varied complex reasons or just expressing repentance directly via this pseudonym which reveals feelings after making such decisions.