对不起不小心错过了你谢谢你曾把我当成唯一
[duì bù qĭ bù xiăo xīn cuò guò le nĭ xiè xiè nĭ céng bă wŏ dāng chéng wéi yī]
This username conveys a sense of regret and gratitude. It translates to 'Sorry for accidentally missing you, thank you for once regarding me as the only one'. It reflects a past relationship where someone was cherished deeply but ultimately lost due to some mischance or misunderstandings.