我冷血薄情你功不可没
[wŏ lĕng xuè bó qíng nĭ gōng bù kĕ méi]
This net-name directly admits that the writer's own personality flaws of being ruthless have been attributed to the addressee. He/she feels his/her present self is largely molded by their significant other. It implies blame mixed with gratitude, or irony.