把个性变任性使你离开我
[bă gè xìng biàn rèn xìng shĭ nĭ lí kāi wŏ]
This username means changing one's character into a whimsical nature causing the other party to leave. This could imply that when being too self-indulgent or stubborn, it drove someone away. Or it suggests a certain regret or realization after a breakup.